Free developer resources - dev support

WebOpt

[Major Cloud Provider]

  • Google Cloud Platform
    • Application Engine - 28 front-end instance hours per day, 9 back-end instance hours per day
    • Cloud Firestore - 1GB storage, 50,000 reads, 20,000 writes, 20,000 deletes per day
    • Compute Engine - 1 non-preemptible e2-micro, 30GB hard drive, 5GB snapshot storage (select regions only), 1 GB network egress per month from North America to all regional destinations excluding China and Australia
    • Cloud storage - 5GB, 1GB network egress
    • Cloud Shell - Web-based Linux shell/basic IDE with 5GB of persistent storage. Limited to 60 hours per week
    • Cloud Publish/Subscribe - 10GB of messages per month
    • Cloud capabilities - 200 million calls per month (including background and HTTP calls)
    • Cloud operation - 200 million requests per month, 360,000 GB-seconds memory, 180,000 vCPU-seconds compute time, 1 GB network egress per month from North America
    • Google Kubernetes Engine - There is no cluster management fee for a regional cluster. Each user node is charged at standard compute engine pricing
    • BigQuery - 1 TB of query capacity per month, 10 GB of storage per month
    • Cloud build - 120 minutes build per day
    • Cloud source repository - up to 5 users, 50 GB storage, 50 GB egress
    • Complete, detailed list - https://cloud.google.com/free
  • Amazon Web Services
    • Amazon DynamoDB - 25GB NoSQL DB
    • Amazon Lambda - 100 million requests per month
    • Amazon SNS - 100 million releases per month
    • Amazon Cloudwatch - 10 custom metrics and 10 alarms
    • Amazon Glacier - 10GB of long-term object storage
    • Amazon SQS - 100 million messaging queue requests
    • Amazon CodeBuild - 100 minutes of build time per month
    • Amazon Code Submission - 5 active users per month
    • Amazon Code Pipeline - 1 active pipeline per month
    • Complete, detailed list - https://aws.amazon.com/free/
  • Microsoft Azure
  • Oracle Cloud
    • Compute - 2 x x64-based memory of 1 GB RAM each, 4 Arm-based Ampere A1 cores, and 24 GB of memory that can be used as one VM or up to 4 VMs
    • Block volumes—4 volumes, totaling 200 GB (for compute)
    • Object storage - 10 GB
    • Load balancer - 1 instance with 10 Mbps
    • Databases - 2 databases of 20 GB each
    • Monitoring - 5 million ingested data points, 10 billion retrieved data points
    • Bandwidth - 10 TB egress per month, with a speed limit of 64 Mbps on x50-based VMs and 500 Mbps * cores on ARM-based VMs
    • Public IP - 2 IPv4 for VMs and 1 IPv4 for load balancers
    • Notifications - 100 million delivery options per month, 1000,<> emails sent per month
    • Complete, detailed list - https://www.oracle.com/cloud/free/
  • IBM Cloud
    • SCF - 500 million executions per month
    • Object Storage - 25GB per month
    • Cloudant database - 1 GB of data storage
    • Db2 database - 100MB data store
    • API connections - 50,000 API calls per month
    • Availability monitoring - 300 million data points per month
    • Log Analytics - 500MB of daily logs
    • Complete, detailed list - https://www.ibm.com/cloud/free/

[Cloud Management Solution]

  • Brainboard - Collaboration solution for intuitively building and managing cloud infrastructure from end-to-end.
  • terraform.io — Terraform Cloud。 Free remote state management and team collaboration for teams of up to 5 users.

[Source Code Repository]

  • Bitbucket — Use CI/CD pipelines to provide unlimited public and private Git repositories for up to 5 users
  • chiselapp.com — Unlimited public and private fossil repositories
  • codebasehq.com — A free project with 100 MB of space and 2 users
  • Codeberg.org - Unlimited public and private Git repositories for free and open-source projects. Static website hosting using Codeberg Pages.
  • Gitea.com - Unlimited public and private Git repositories
  • GitGud — Unlimited private and public repositories. Free forever. Powered by GitLab and Sapphire. CI/CD is not provided.
  • GitHub — Unlimited public repositories and unlimited private repositories (with unlimited collaborators). In addition to this, there are a few other free services that are also offered (there are more, but we have listed the main ones here):
  • gitlab.com — Unlimited public and private Git repositories with unlimited collaborators. The following features are also available:
    • CI/CD (public repositories free, private repositories 400 minutes per month)
    • Static site with GitLab pages.
    • Each repository is limited to 10 GB of container registries.
    • Project management and issue tracking.
  • heptapod.net — Heptapod is a friendly fork of GitLab Community Edition that powers Mercurial
  • ionicframework.com - Repositories and tools for developing applications with Ionic, you also have an ionic repository
  • NotABug — NotABug.org is a free software code collaboration platform based on the Git Freely licensed Project
  • OSDN-OSDN.net is a free service for open source software developers that offers SVN/Git/Mercurial/Bazaar/CVS repositories and more.
  • Pagure.io—Pagure.io is a free, open-source software code collaboration platform for Git-based FOSS licensed projects
  • perforce.com — Free 1GB Cloud and Git, Mercurial or SVN repositories.
  • pijul.com - Unlimited free and open source distributed version control systems. Its distinguishing feature is a sound theory based on patches, which makes it easy to learn and use, and really distributed. Solved many problems with GIT/HG/SVN/DARCS.
  • plasticscm.com — Free for individuals, OSS, and nonprofits
  • projectlocker.com — A free private project (Git and Subversion) with 50 MB of space
  • RocketGit — Git-based repository hosting. Unlimited public and private repositories.
  • savannah.gnu.org - Collaborative Software Development Management System as a Free Software Project (for the GNU Project)
  • savannah.nongnu.org - Serves as a collaborative software development management system for free software projects (non-GNU projects).

[APIs, Data, and Machine Learning]

  • Intellectual property. City – 100 free IP geolocation requests per day
  • Abstract API — A suite of APIs for a variety of use cases, including IP geolocation, gender detection, and even email verification.
  • algorithmia.com — Free hosting algorithms. Includes a free monthly stipend for running algorithms. There is now CLI support.
  • Apify — Web scraping and automation platform for creating APIs and extracting data for any website. Off-the-shelf scrapers, integrated agents, and custom solutions. Free plan, including $5 platform credits per month.
  • API Mocha - Completely free online API mocking for testing and prototyping. Make up to 500 requests per day, fully customizable API responses, download mock rules as a Postman collection.
  • APITemplate.io - Automatically generate images and PDF documents using simple APIs or automated tools like Zapier & Airtable. No CSS/HTML is required. The free plan comes with 50 images and 3 templates per month.
  • Atlas Toolkit - A lightweight library for developing single-page web applications that are instantly accessible. Works with Java, Node.js, Perl, Python and Ruby.
  • Beeceptor - simulates rest APIs, fake API responses, and more in seconds. 50 requests per day for free, public dashboard, open endpoint (anyone linked to the dashboard can view requests and responses).
  • bigml.com — Managed machine learning algorithms. Unlimited free development tasks with a limit of 16 MB data/task.
  • Bruzu — Automated image production. Use APIs, integrations or no-code tables to generate a large number of image variations. The API is free and comes with a watermark.
  • Calendar - Enterprise-grade public holidays API service for more than 200 countries. The free plan includes 1000 calls per month.
  • Clarifai — Image API for custom face recognition and detection. Ability to train AI models. The free plan has 5000 calls per month.
  • Cloudmersive — Utility API platform with full access to an extended library of APIs, including document conversion, virus scanning, and more, with 800 calls per month.
  • Colaboratory — Free web-based Python notebook environment with Nvidia Tesla K80 GPUs.
  • Collect2 — Create API endpoints to test, automate, and connect webhooks. The free plan allows two datasets, 2000 records, 1 forwarder, and 1 alert.
  • Conversion ToolOnline file converter for documents, images, videos, audios, ebooks. REST APIs are available. Node.js, PHP, Python libraries. Supports files up to 50 GB (available on paid plans). The free tier is limited by file size and conversions per day.
  • CraftMyPDF - Automatically generate PDF documents from reusable templates using a placeable editor and simple API. The free plan comes with 100 PDFs and 3 templates per month.
  • CurlHub — A proxy service for inspecting and debugging API calls. The free plan includes 10,000 requests per month.
  • CurrencyScoop - Real-time monetary data API for fintech applications. The free plan includes 5000 calls per month.
  • Datapane - APIs for building interactive reports in Python and deploying Python scripts and Jupyter Notebooks as self-service tools.
  • DB Designer — Cloud-based database schema design and modeling tool with a free starter plan for 2 database models and 10 tables per model.
  • DeepAR — Augmented reality face filter for any platform with just one SDK. The free plan offers up to 10 months of active users (MAU) and tracking up to 4 faces
  • Deepnote - A new type of data science notebook. Compatible with real-time collaboration and runs in the cloud. The free tier includes unlimited personal projects, up to 750 hours of standard hardware, and a team of up to 3 editors.
  • Diggernaut — A cloud-based web scraping and data extraction platform for converting any website into a dataset, or using it like an API. The free plan includes 5K page requests per month.
  • Disease.sh — A free API that provides accurate data for building useful Covid-19-related applications.
  • dominodatalab.com – Data science with support for Python, R, Spark, Hadoop, MATLAB, etc.
  • dreamfactory.com — Open source REST API backend for mobile, web, and IoT applications. Connect any SQL/NoSQL database, file storage system, or external service and instantly create a comprehensive REST API platform with real-time documentation, user management, and ,…
  • DynaPictures - Design automation tool that allows you to dynamically generate images through REST APIs. Dynamically change colors, text, logos, and images. The free plan includes 30 generated images and 3 image templates per month.
  • Efemarai - A platform for testing and debugging ML models and data. Visualize any computational graph. Developers get 30 free debugging sessions per month.
  • ExtendsClass - Free web-based HTTP client for sending HTTP requests.
  • Export SDK - PDF Builder API with drag-and-drop template editor that also offers SDKs and no-code integrations. The free plan has 250 pages per month, unlimited users, and three templates.
  • FraudLabs Pro — Screen order transactions for credit card payment fraud. This REST API will detect all possible fraud signatures based on the input parameters of the order. The free micro plan has 500 transactions per month.
  • FreeGeoIP.app - Completely free geographic IP information (JSON, CSV, XML). No registration required, 15000,<> queries per hour rate limit.
  • GeoDataSource — A location search service that uses latitude and longitude coordinates to find city names. Up to 500 free API queries per month.
  • Sparkle - Programmatically generate dynamic images from a base template. Restful API and nocode integration. The free tier comes with 50 images and 5 templates per month.
  • GoodData - Data as a Service - Create interactive and insightful dashboards. The free tier comes with 5 workspaces and 100 MB/workspace.
  • Hookbin - Create a unique (public or private) endpoint to collect, parse, and inspect HTTP requests. Check headers, bodies, query strings, cookies, uploaded files, and more. Used to test/inspect webhooks. Similar to RequestBin, Webhook.site.
  • Hoppscotch - A free, fast, and beautiful API request builder.
  • Hybiscus - Build pdf reports using a simple declarative API. The free tier includes up to 100 one-page reports per month with the ability to customize color palettes and fonts.
  • Invantive Cloud — Use Invantive SQL or OData4 (typically Power BI or Power Query) to access more than 70 (cloud) platforms such as Exact Online, Twinfield, ActiveCampaign, or Visma. Includes data replication and exchange. Free plan for developers and implementation consultants. Free for specific platforms with limited data volume.
  • ipaddress.sh—A simple service to get a public IP address in a different format.
  • Iploka — IP to Geolocation API – Offers a free forever plan for developers with a limit of 10k requests per month.
  • IP Geolocation – IP Geolocation API - Free forever plan for developers with a limit of 30000,1000 requests per month (<>,<>/day).
  • IP Geolocation API — ABSTRACT’s IP Geolocation API - Extensive free plan that allows 200,000 requests per month.
  • IP2Location — Freemium IP geolocation service. The LITE database is available for free download. Import the database in the server and perform local queries to determine the city, coordinates and ISP information.
  • ipapi - Kloudend, Inc’s IP Address Location API - A reliable geolocation API, built on AWS, trusted by Fortune 500 companies. The free tier offers 30k lookups/month (1k/day) with no registration required. Contact us for a higher limit trial plan.
  • IPinfo — Fast, accurate, and free (up to 50k/month) IP address data API. Provides APIs with details about geolocation, company, carrier, IP range, domain, abuse contacts, and more. All paid APIs are available for free trial.
  • IPFast — Use the free, fastest, and simple lookup tool to find your IP address and related details.
  • IPList — Find details about any IP address, such as geographic IP information, tor address, hostname, and ASN details. Free for individual and business users.
  • BigDataCloud – Provides fast, accurate and free (unlimited or up to 10K-50K/month) APIs for modern networks such as IP geolocation, reverse geocoding, network insights, email and phone verification, customer information, and more.
  • IPTrace — A very simple API that provides reliable and useful IP geolocation data for your business.
  • JSON IP – Returns the public IP address of the client from which it was requested. The free tier requires no registration. Use CORS data to use client JS requests directly from the browser. Useful for services that monitor changes in client and server IPs. Unlimited requests.
  • konghq.com/ — API marketplace and powerful tools for private and public APIs. For the free tier, some features are limited, such as monitoring, alerting, and support.
  • Kreya — Free gRPC GUI client for calling and testing gRPC APIs. The gRPC API can be imported through server reflection.
  • KSoft.Si - Free Lyrics API is mainly aimed at discordant bots. An extensive database of images and users is also available
  • Go light — Improve machine learning models by using the right data. Use datasets of up to 1,000 samples for free.
  • MailboxValidator — The email verification service uses a real mail server connection to confirm a valid email. The free API plan has 300 verifications per month.
  • microlink.io - It converts any website into data, such as meta tag normalization, Merun link preview, scraping feature, or screenshot as a service. 100 requests per day are free.
  • monkeylearn.com — Text analytics using machine learning, 300 queries per month for free.
  • MockAPI — MockAPI is a simple tool that allows you to easily mock APIs, generate custom data, and preform them using a RESTful interface. MockAPI is intended to be used as a prototyping/testing/learning tool. 1 project / 50 resources per project is free.
  • Mocki - A tool that allows you to create mock GraphQL and REST APIs that are synced to GitHub repositories. Simple REST APIs are free to create and use without registration.
  • Mocko.dev — Proxy your API, select endpoints to simulate in the cloud and inspect traffic for free. Accelerate development and integration testing.
  • Mocky - A simple web app that generates a custom HTTP response that simulates an HTTP request. Also available as open source.
  • reqres.in - A free hosted REST-API that is ready to respond to your AJAX requests.
  • microenv.com — Create fake REST APIs for developers to build code and applications in docker containers.
  • neptune.ai - Record, store, display, organize, compare, and query all MLOps metadata. Free for individuals: 1 member, 100 GB metadata storage, 200 hours of monitoring/month
  • News API — Use code to search for news on the web for JSON results. Developers get 3,000 queries per month for free.
  • OCR.Space — An OCR API that parses images and pdf files to return text results in JSON format. 25,000 requests per month for free.
  • Duply.co - Create dynamic images from APIs and URLs, design templates once and reuse. The free tier offers to create 70 images per month from APIs and URLs, and up to 100 images via Form.
  • OpenAPI3 Designer — Create Open API 3 definitions visually and freely.
  • parsehub.com — Extract data from dynamic sites and convert dynamic sites into APIs, 5 projects are free.
  • Pixela - Free daily stream database service. All operations are performed by the API. You can also use heat maps and line charts for visualization.
  • Postback—An HTTP callback after the request. 8,000 free registration requests.
  • Postman — Streamline workflows and create better APIs faster with Postman, a collaborative platform for API development. Free to use Postman app forever. Postman cloud features are also free forever, but with certain limitations.
  • PrefectCloud — A complete platform for data flow automation. All plans include 20,000 free runs per month. This is enough to provide ETL support for most small businesses.
  • ProxyCrawl - Crawl and scrape websites without the need for a proxy, infrastructure, or browser. We solve the captcha issue for you and prevent you from being blocked. The first 1000 calls are free.
  • Public-Apis Github Repo — A list of free public APIs.
  • Supportkoala — Allows you to automatically generate images from input from templates. The free plan allows you to create up to 100 images per week.
  • QuickMocker — Manage online fake API endpoints under your own subdomain, forward requests to localhost URLs for webhooks development and testing, URL paths using RegExp and multiple HTTP methods, prioritize endpoints, over 100 shortcodes (dynamic or fake response values) for response templating, imported from the OpenAPI (Swagger) specification in JSON format , proxy requests, restrict endpoints by IP address, and authorization header. The free account offers 1 random subdomain, 10 endpoints, 5 RegExp URL paths, 50 shortcodes per endpoint, 100 requests per day, 50 pieces of history in the request log.
  • RequestBin.com — Create a free endpoint to which you can send HTTP requests. Any HTTP request sent to that endpoint is logged along with the associated payload and headers so that you can observe requests from webhooks and other services.
  • restlet.com — APISpark enables any API, application, or data owner to become an API provider in minutes through an intuitive browser interface.
  • Roboflow - Create and deploy custom computer vision models without any machine learning experience. The free tier includes up to 1,000 free source images.
  • ROBOHASH - Web service for generating unique (cool:) images from any text.
  • Scraper.AI - SaaS, which turns any website into a consumable API that you can build. 50 free fetches per month and 10000,<> API calls.
  • Scraper’s Proxy — Simple HTTP proxy API for scraping. Crawl anonymously without worrying about restrictions, blocks, or captcha. The first 100 successful crawls are free every month, including JavaScript rendering (more if you contact support).
  • ScrapingAnt — Headless Chrome Scraping API and free checked proxy service. Javascript rendering, advanced spinning proxy, CAPTCHA avoidance. Free plan available.
  • ScraperBox — Undetectable web scraping API that uses the real Chrome browser and proxy rotation. Use simple API calls to crawl any web page. The free plan has 1000 requests per month.
  • ScrapingDog — Scrapingdog handles millions of proxies, browsers, and CAPTCHAs, providing you with the HTML of any web page in a single API call. It also offers Web Scraper for Chrome and Firefox, as well as software for instant scraping needs. Free plan available.
  • scrapinghub.com — Scrape data using visual interfaces and plugins. The free plan includes unlimited crawling on shared servers.
  • ScrapingNinja — Handle JS rendering, Chrome Headless, proxy rotation, and CAPTCHA in one place to solve all problems. The first 1000 are free and do not require a credit card.
  • Sheetson - Instantly convert any Google Sheets to a RESTful API. Free plan available.
  • shrtcode API - Free URL shortening API with no authorization and no request limits.
  • SerpApi - Real-time search engine crawling API. Returns structured JSON results from Google, Youtube, Bing, Baidu, Walmart, and many other engines. The free plan includes 100 successful API calls per month.
  • Similar Words API - An API that looks up similar words with a vocabulary of about 400 million words.
  • Sofodata - Create a secure RESTful API from CSV files. Accelerate application development by uploading CSV files and accessing data instantly through its API. The free plan includes 2 APIs and 2,500 API calls per month. No credit card required.
  • Tamber — Put deep learning-driven recommendations in your app. Free 5k monthly active users.
  • Time Gate—Time Series Analysis API.
  • TinyMCE - Rich Text Editing API. Core features are free and unlimited use.
  • Unixtime - Free API for converting Unixtime to DateTime and vice versa.
  • Webhook.site - Easily test HTTP webhooks with this handy tool that displays requests instantly.
  • wit.ai — NLP for developers.
  • wolfram.com — Knowledge-based algorithms built into the cloud.
  • wrapapi.com — Convert any website to a parameterized API. 30000,<> API calls per month.
  • ZenRows - Web Scraping API and proxy server that bypasses any anti-bot solution while providing JavaScript rendering, spinning proxies, and geolocation. Free tier for 1000 API calls.
  • Zenscrape — Web scraping API with headless browser, residential IP, and simple pricing. 1000 free API calls per month with additional free credits for students and nonprofits.
  • ip-api — IP geolocation API, free for non-commercial use, no API key required, free plan limited to 45 requests/minute from the same IP address.
  • WebScraping.AI - Simple web scraping API, built-in parsing, Chrome rendering and proxying. 2000 free API calls per month.
  • Postal Code Library - Free ZIP Code API to access global ZIP Code data. 10000,<> free requests per month.
  • EVA - Free Email Validator API that helps identify if an email is one-time and has a valid MX record.
  • happi.dev - Collection of freemium API services (music, exchange rates, key-value stores, language detection, password generator, QRCode generator, lyrics). 8000,<> free API calls per month.
  • huggingface.co - Build, train, and deploy NLP models for Pytorch, TensorFlow, and JAX. Free up to 30k input characters/month.
  • vatcheckapi.com - Simple and free VAT ID validation API. 500 free requests per month.
  • numlookupapi.com - Toll-Free Number Verification API - 10,<> free requests per month.

[Maven Repository]

  • Artifactory - An artifact repository that supports multiple package formats such as Maven, Docker, Cargo, Helm, PyPI, CocoaPods, and GitLFS. Includes the package scanning tool XRay and the CI/CD tool Pipelines (formerly Shippable) with a free monthly tier of 2,000 CI/CD minutes.
  • central.sonatype.org — Default artifact repository for Apache Maven, SBT, and other build systems.
  • cloudrepo.io – Cloud-based private and public, Maven and PyPi repositories. Free for open source projects.
  • cloudsmith.io — Simple, secure, and centralized repository services for Java/Maven, RedHat, Debian, Python, Ruby, Vagrant, and more. Free tier + free and open source.
  • jitpack.io — Maven repository for JVM and Android projects on GitHub, free for public projects.
  • packagecloud.io — Easy-to-use repository hosting: Maven, RPM, DEB, PyPi, NPM, and RubyGem packages (with free tiers).
  • repsy.io — 1 GB free private/public Maven repository.

[Tools for teams and collaboration]

  • 3Cols - A free cloud-based code snippet manager for personal and collaborative code.
  • Bitwarden — The easiest and most secure way for individuals, teams, and business organizations to store, share, and sync sensitive data.
  • Braids – A chat app designed for teams. Free for public access groups, unlimited users, history, and integrations. It also offers a self-hosted open-source version.
  • cally.com — Find the best time and date for your meeting. Easy to use, perfect for small and large groups.
  • Calendly — Calendly is a tool for connecting and scheduling meetings. The free plan offers 1 calendar connection and unlimited meetings per user. Desktop and mobile apps are also available.
  • Discord – Chat with public/private rooms. Mark text, voice, video, and screen sharing capabilities. Free for unlimited users.
  • Telegram — Telegram is for everyone who wants fast and reliable messages and calls. Business users and small teams may appreciate large groups, usernames, desktop apps, and powerful file sharing options.
  • Duckly — Talk and collaborate with your team in real time. Pair programming with any IDE, terminal sharing, voice, video, and screen sharing. Free for small teams.
  • evernote.com — Tools for organizing information. Share notes and work with others
  • Fiber—A connected workspace platform. Free for a single user, up to 2 GB disk space.
  • Filestash — A Dropbox-like file manager that connects to a range of protocols and platforms: S3, FTP, SFTP, Minio, Git, WebDAV, Backblaze, LDAP, and more.
  • flock.com — A faster way for teams to communicate. Free unlimited messages, channels, users, apps and integrations
  • Flowdash — Automate business workflows. Free tier for up to 3 users, 1000 tasks, and 3 workflows.
  • flowdock.com — Chat and inbox, free for up to 5 teams
  • GitDailies - Daily reports of the team’s commit and pull request activity on GitHub. Includes push visualizer, peer identification system, custom alert generator. The free tier has unlimited users, 3 repositories, 3 alert configurations.
  • gitter.im — Chat, for GitHub. Unlimited public and private rooms, free for up to 25 groups
  • hangouts.google.com — Complete all your conversations in one place for free, with a Google Account
  • HeySpace - Task management tool with chat, calendar, timeline, and video calls. Free for up to 5 users.
  • helplightning.com — Help videos with augmented reality. Free, no analysis, encryption, and support required
  • ideascale.com — Allow customers to submit ideas and votes, free for 1 member in 25 communities
  • Igloo — Internal portal for sharing documents, blogs, calendars, and more. Free for up to 10 users.
  • Keybase – Keybase is a cool FOSS alternative to Slack that keeps everyone’s chats and files safe, from home to community to company.
  • Google Meet — Use Google Meet for your business’s online video conferencing needs. Meet provides secure, easy-to-join online meetings.
  • /meet for Slack - Use /meet to start a Google Meeting directly from Slack in any channel, group or DM.
  • Markup – Markup allows you to collect feedback directly on websites, PDFs, and images.
  • meet.jit.si — One-click video conversations, screen sharing, free
  • Microsoft Teams — Microsoft Teams is a digital chat-based hub that brings together conversations, content, and apps in one place, all from one experience. It is free for up to 50,<> users.
  • Miro - Scalable, secure, cross-device, and enterprise-ready team collaboration whiteboard for distributed teams. Use a freemium plan.
  • ConceptConcept is a note-taking and collaboration application with markup support that also integrates tasks, wikis, and databases. The company describes the app as an all-in-one workspace for note-taking, project management, and task management. In addition to the cross-platform app, it can be accessed through most web browsers.
  • Nuclino - A lightweight collaborative wiki for all your team’s knowledge, documents, and notes. Free plan with all the basic features, up to 50 items, 5GB total storage.
  • PageShare.dev - Add visual review functionality to GitHub pull requests without deploying a website. Up to 10 pages per month are free, with a total storage space of 100MB.
  • Pendulum- Pendulum is an idle time tracking tool that helps you manage your time in a better way with an easy-to-use interface and useful statistics.
  • Raindrop.io – Private and secure bookmarking app for macOS, Windows, Android, iOS, and the web. Free unlimited bookmarks and collaboration.
  • element.io — A decentralized, open-source communication tool built on Matrix. Group chat, direct messaging, encrypted file transfer, voice and video chat, and easy integration with other services.
  • Rocket.Chat - Team shared inbox, secure, unlimited, and open source.
  • seafile.com — private or cloud storage, file sharing, synchronization, discussion. The private version is full. The cloud version is only 1 GB
  • Slab — Modern knowledge management services for teams. Free for up to 10 users.
  • slack.com — Free for unlimited users with certain feature limitations
  • SpectrumCreate public or private communities for free.
  • Status heap - The status page of the status page. Track the status page for upstream providers.
  • talky.io — Free group video chat. Anonymity. Peer-to-peer. No plugins, registrations or payments required
  • Tefter - Bookmarking app with powerful Slack integration. Free for open source teams.
  • Teletyping - Share terminals, voice, code, whiteboard, etc. Developers don’t need to sign in, end-to-end encrypted collaboration.
  • TimeCamp - Free time tracking software for unlimited users. Easily integrate with PM tools like Jira, Trello, Asana, and more.
  • Tree schema – Use APIs for data catalog and metadata management to manage data lineage as code. Free for teams of up to 5 users.
  • twist.com — An asynchronous-friendly team communication app where conversations stay organized and on topic. Free and unlimited plans are available. Offer discounts to eligible teams.
  • BookmarkOS.com - All-in-one bookmark manager, tab manager, and task manager are available for free in a customizable online desktop with folder collaboration.
  • typetalk.com — Share and discuss ideas with your team via instant messaging on the web or mobile devices
  • Tug - Preview every pull request, automatically and on demand. Free for all, free nanolayers for non-profit organizations.
  • whereby.com — Free one-click video conversations (formerly known as appear.in)
  • vadoo.tv - Video hosting and marketing made simple. Videos can be uploaded with just one click. Record, manage, share, etc. The free tier offers up to 10 videos, 1 GB storage, 10 GB bandwidth/month
  • vspace — Free link manager with private/public spaces, including Slack and Google Docs integration and Chrome plugins.
  • userforge.com—Interconnected online roles, user stories, and context mappings. Helps keep design and development in sync, free for up to 3 roles and 2 collaborators.
  • wistia.com — Video hosting, including audience analytics, HD video delivery, and marketing tools to help you understand visitors, 25 videos, and Wistia-branded players
  • wormhol.org — Simple file sharing service. Share unlimited files to peers up to 5GB as needed.
  • zoom.us — Secure video and web conferencing with add-ons available. Free for 40 minutes
  • shtab.app - Project management services that enable collaboration and remote transparency in the office with AI-based trackers.
  • zdoo.co — With CRM, OA, and project management suites, zdoo is powerful when it comes to team collaboration. The free cloud version offers limited users and space, and the premium version is free for one month.
  • Zulip — Live chat with a unique email-like threading model. The free plan includes 10,000 search histories and up to 5 GB of file storage. It also offers a self-hosted open-source version.
  • Automate.io - Simple and complex automated workflow tool with more than 200 application integrations. 300 actions and 5 bots per month for free
  • robocorp.com - An open-source stack to support automated operations. Try cloud capabilities and implement simple automation for free. The robot works for 240 minutes/month, 10 assistants run, and 100 MB of storage.
  • Fleep.io – Fleep is a replacement for Slack. It offers a free plan for small teams with a complete message history, unlimited 1:1 conversations, 1 group conversations, and 1 GB file storage.
  • Chanty.com – Chanty is another option for Slack. It offers a free perpetual plan for small teams (up to 10), including unlimited public and private conversations, searchable history, unlimited 1:1 audio calls, unlimited voice messages, 10 integrations, and 20 GB of storage per team.

[Content Management System]

  • acquia.com — Host the Drupal site. Free tier for developers. Free development tools (such as Acquia Dev Desktop) are also available
  • Informative – Headless CMS. Content management and delivery APIs in the cloud. Comes with a free community space with 5 users, 25K records, 48 content types, 2 locales.
  • Cosmic — Headless CMS and API toolkit. Free personal plan for developers.
  • Crystallization – Headless PIM with e-commerce support. Built-in GraphQL API. The free version includes unlimited users, 1000 directory items, 5 GB/month bandwidth, and 25k/month API calls.
  • DatoCMS - Free tier for small projects. DatoCMS is a GraphQL-based CMS. At the lower tier, you have 100k/month calls.
  • Directus — Headless CMS. A completely free and open-source platform for managing asset and database content on-premises or in the cloud. There are no limits or paywalls.
  • Forestry.io/ — Headless CMS. Give your editors the power of Git. Easily create and edit Markdown-based content. Comes with three free websites, including 3 editors, instant preview. Integration with blogs hosted elsewhere in Netlify/GitHubpages/
  • FrontAid — A headless CMS that stores JSON content directly in your own Git repository. There are no limits.
  • kontent.ai - Content-as-a-Service platform that gives you all the headless CMS benefits while empowering marketers. The Developer Program offers unlimited projects for 2 users, each with 2 environments, 500 content items, 2 languages with delivery and management APIs, and custom element support. Larger plans are available to suit your needs.
  • Prismic — Headless CMS. Content management interface with fully managed and extensible APIs. The community plan provides unlimited API calls, documents, custom types, assets, and locales for 1 user. Everything you need for your next project. A larger free plan is available for open content/open source projects.
  • sanity.io – Hosted structured content backend with a customizable MIT licensed editor built with React. Unlimited projects. 3 users, 2 datasets, 50,5 API CDN requests, <>GB of assets free per project
  • sensenet - API-first headless CMS that provides enterprise-grade solutions for businesses of all sizes. The Developer Program offers 3 users, 500 content items, 3 built-in roles, 25+5 content types, fully accessible REST APIs, document preview generation, and Office Online editing.
  • GraphCMS - Free tier for small projects. Moved from a traditional solution to a GraphQL native headless CMS and provided an omnichannel content API first.
  • Squidex - Free package for small projects. API/GraphQL First. Open source and event-based sourcing (automatic validation of every change).

[Code Review]

  • SoftaCheck — An online tool that uses open-source tools such as cppcheck and clang-tidy to perform static analysis of C/C++ code and automatically generate code documentation for users who use doxygen. This tool is free to use.
  • beanstalkapp.com—Complete workflow for writing, reviewing, and deploying code), a free account for 1 user and 1 repository with 100 MB of storage
  • browserling.com — Live interactive cross-browser testing with only 1024 minutes of free session with MS IE 768 at 9 x 3 resolution under Vista
  • codacy.com — Automated code review for PHP, Python, Ruby, Java, JavaScript, Scala, CSS, and CoffeeScript, with unlimited public and private repositories available for free
  • Codeac.io – DevOps’s automated infrastructure-as-code review tools integrate with GitHub, Bitbucket, and GitLab (even self-hosted). In addition to the standard language, it analyzes Ansible, Terraform, CloudFormation, Kubernetes, and more. (Open Source Free)
  • CodeBeat — Automated code review platform for multiple languages. Free forever for public repositories with Slack and email integration.
  • codeclimate.com — Automated code reviews, open source free, unlimited organization-owned private repositories (up to 4 collaborators). Students and institutions are also free.
  • codecov.io — Code Coverage Tool (SaaS), free and open source, and 1 free private repository
  • CodeFactor — Automated code review for Git. The free version includes unlimited users, unlimited public repositories, and 1 private repository.
  • codescene.io - CodeScene prioritizes technical debt based on how developers use code and visualizes organizational factors such as team coupling and system mastery. Free and open source.
  • coveralls.io — Displays test coverage reports, free and open source
  • Dareboost - 5 free web performance, accessibility, security analysis reports per month
  • deepcode.ai — DeepCode is AI-based to discover errors, security vulnerabilities, performance, and API issues. DeepCode’s analysis speed allows us to analyze your code in real time and provide results when you click the Save button in the IDE. Supported languages include Java, C/C++, JavaScript, Python, and TypeScript. Integration with GitHub, BitBucket and GitLab. Free open source and private repositories to free up to 30 developers.
  • deepscan.io — Advanced static analysis to automatically find run-time errors in JavaScript code, free to open source
  • DeepSource - DeepSource continuously analyzes source code changes to find and fix issues categorized under security, performance, antipattern, error risk, documentation, and style. Native integration with GitHub, GitLab, and Bitbucket.
  • eversql.com — EverSQL - The #1 platform for database optimization. Automatically gain critical insights into database and SQL queries.
  • gerrithub.io — Free Gerrit code review of GitHub repositories
  • gocover.io — Code coverage for any Go package
  • goreportcard.com — The code quality of the Go project, open source and free
  • gtmetrix.com — Reports and comprehensive recommendations for optimizing your site
  • holistic.dev - The #1 static code analyzer for PostgreSQL optimization. Performance, security, and schema database issues are automatically detected service
  • houndci.com — Comments on code quality submitted by GitHub, free and open source
  • Imgbot — Imgbot is a friendly robot that optimizes your images and saves you time. Optimized images mean shrinking file size without sacrificing quality. It is free for open source.
  • Kritika — Static Code Analysis for Perl, integrated with GitHub. Unlimited public repositories are available for free.
  • resmush.it — reSmush.it is a free API that provides image optimization. reSmush.it has been implemented on the most common CMSs such as Wordpress, Drupal, or Magento. reSmush.it is the most commonly used image optimization API, has processed over 70 billion images, and is still free.
  • insight.sensiolabs.com — The code quality of the PHP/Symfony project, open source and free
  • lgtm.com — Free and open source continuous security analysis for Java, Python, JavaScript, TypeScript, C#, C, and C++
  • reviewable.io — Code reviews for GitHub repositories, public or private repositories are free
  • parsers.dev - Abstract syntax tree parser and intermediate representation compiler as a service
  • scan.coverity.com — Static code analysis for Java, C/C++, C#, and JavaScript, free and open source
  • scrutinizer-ci.com — Continuous testing platform, free and open source
  • shields.io — Quality metadata badge for open source projects
  • Sider — Code review platform for multiple languages. Support for integration with GitHub. Free for public repositories with unlimited users.
  • sonarcloud.io — Free and open source automatic source analysis for Java, JavaScript, C/C++, C#, VB.NET, PHP, Objective-C, Swift, Python, Groovy, and more
  • Source code level – Automated code review and team analysis. Free for open source and organizations, up to 5 collaborators.
  • Typo CI — Typo CI reviews your pull request and submits spelling errors, free and open source.
  • Viezly - Enhanced code review tool for easy code reading and navigation. Free and open source, free for personal use.
  • webceo.com - SEO tools, but there are also code verification and different types of advice
  • zoompf.com — Repair the performance of the site for detailed analysis

[Code search and browse]

  • codota.com — Codota helps developers create better software faster by providing insights learned from all the code in the world. Plugins are available.
  • libraries.io — Search and dependency update notifications for 32 different package managers, free and open source
  • Namae - Search for github, gitlab, heroku, netlify, and many more on various websites for the availability of project names.
  • searchcode.com — Comprehensive text-based code search, free and open source
  • sourcegraph.com — Java, Go, Python, Node.js, etc., code search/cross-reference, free and open source
  • tickgit.com — Displays comments (and other markup) to identify areas of code that are worth returning for improvement.TODO
  • CodeKeep - Google Keep for Code Snippets. Organize, discover and share code snippets with powerful code screenshot tools with preset templates and linking capabilities.

[CI and CD]

  • AccessLint — AccessLint brings automated web accessibility testing into your development workflow. For open source and educational purposes, it is free.
  • appcircle.io — Automated mobile CI/CD/CT for iOS and Android with online device emulator. 20-minute build timeout (60 minutes for open source), single concurrency for free.
  • appveyor.com — CD service for Windows, free for open source
  • bitrise.io — CI/CD for native or hybrid mobile apps. 200 free builds per month, 10 minutes build time and two team members. OSS projects have a 45-minute build time, +1 concurrency, and unlimited team size.
  • buddy.works — CI/CD with 5 free projects and 1 concurrent run (120 executions/month).
  • buddybuild.com — Build, deploy, and gather feedback for iOS and Android apps in a seamless, iterative system
  • circleci.com — One concurrent build is free
  • cirrus-ci.org - Public GitHub repositories are free
  • codefresh.io — Free lifetime plan: 1 build, 1 environment, shared server, unlimited public repositories
  • codemagic.io - Free 500 minutes build time per month
  • codeship.com — 100 private builds per month, 5 private projects, unlimited open source
  • Continuous PHP — ContinuousPHP is the first and only PHP-centric platform for building, packaging, testing, and deploying applications in the same workflow. Free for community projects, i.e. OSS/public/education projects.
  • deployhq.com - 1 project, 10 deployments per day (30 minutes/month build minute)
  • Drones - Drone Cloud enables developers to run continuous delivery pipelines across multiple architectures, including x86 and Arm (32-bit and 64-bit), all in one place
  • LayerCI — CI for full-stack projects. 1 full-stack preview environment with 5GB memory and 3 CPUs.
  • ligurio/awesome-ci — A comparison of continuous integration services
  • Octopus Deployment - Automated deployment and release management. Free < = 10 deployment targets.
  • scalr.com - Terraform’s remote state and operations backend with full CLI support, integration with OPA, and a layered configuration model. You can release up to 5 users.
  • semaphoreci.com — Open source and free, 100 private builds per month
  • Squash Labs — Create a VM for each branch and serve your app with a unique URL, unlimited public and private repositories, up to 2 GB VM size.
  • stackahoy.io — 100% free. Unlimited deployments, branches, and builds
  • styleci.io — Public GitHub repositories only
  • Mergify — GitHub’s workflow automation and merge queue — is free for public GitHub repositories
  • Integromat — Workflow automation tool that lets you connect applications and automate workflows using the UI, and it supports many applications and the most popular APIs. Public GitHub repositories are free, and the free tier includes 100 MB, 1000,15 actions, and a <>-minute minimum interval.

[Test]

  • Applitools.com — Intelligent visual verification for web, native mobile, and desktop apps. Integration with almost all automation solutions (e.g. Selenium and Karma) and remote runners (Sauce Labs, Browser Stack). Free and open source. Free tier for a single user with a limited number of checkpoints per week.
  • Appetizer – Test Android and iOS apps on cloud-based Android phone/tablet emulators and iPhone/iPad emulators directly in your browser. The free tier includes 1 concurrent session for 100 minutes per month. There is no limit on app size.
  • Bird Eats Bugs — Report bugs faster (and better). Record your screen with the Bird browser extension, and it will automatically capture the technical data that engineers need to debug. A free tier for small groups.
  • lambdatest.com — Manual, visual, screenshot, and automated browser testing of selenium and cypress, free and open source
  • browserstack.com — Manual and automated browser testing, free and open source
  • checkbot.io – Browser extension to test that your website follows more than 50 best practices for SEO, speed, and security. A free tier for small websites.
  • checklyhq.com - Checkly is the API and E2E monitoring platform of the modern stack: programmable, flexible, and caring JavaScript. A generous free tier for developers.
  • crossbrowsertesting.com - Manual, visual, and selenium browser testing in the cloud - free and open source
  • cypress.io - Fast, simple and reliable testing of anything running in the browser. Cypress Test Runner is always free and open source, with no limitations or limitations. Cypress Dashboard is free to use in open source projects and can be used by up to 5 users.
  • everystep-automation.com — Record and replay all steps performed in a web browser and create scripts,… Free, fewer options
  • Gremlin — Gremlin’s chaos engineering tools allow you to safely, reliably, and simply inject faults into your systems to find weaknesses before they cause customer-facing problems. Gremlin Free provides access to shutdown and CPU attacks on up to 5 hosts or containers.
  • gridlastic.com — Selenium Grid Test, Free Plan Up to 4 simultaneous Selenium nodes/10 Grid Starts/4,000 minutes/month
  • loadmill.com - Automatically create APIs and load tests by analyzing network traffic. Simulate up to 50 concurrent users for up to 60 minutes per month for free.
  • percy.io - Add visual tests to any web app, static site, style guide, or component library. Unlimited team members, demo apps and unlimited projects, 5,000 snapshots/month.
  • reflect.run - No-code automated testing for web apps. Testing can be scheduled in-app or performed from a CI/CD tool. Each test run includes a full video recording as well as console and network logs. The free tier includes an unlimited number of saved tests, 25 test runs per month, and up to 3 users.
  • saucelabs.com — Cross-browser testing, selenium testing, and mobile testing, free and open source
  • testingbot.com — Selenium browser and device testing, free and open source
  • Testspace.com - Dashboard for publishing automated test results and framework for implementing manual tests as code using GitHub. The service is free for open source accounts with 450 results per month.
  • tesults.com — Test result reporting and test case management. Integration with popular testing frameworks. Open source software developers, individuals, educators, and small teams getting started can request discounts and free products in addition to basic free items.
  • websitepulse.com — A variety of free web and server tools.
  • qase.io - Test management system for development and QA teams. Manage test cases, compose test runs, execute test runs, track defects, and measure impact. The free package includes all the core features, where 500Mb is available for add-ons and up to 3 users.
  • knapsackpro.com - Accelerate testing by implementing optimal test suite parallelization on any CI provider. Split Ruby, JavaScript tested on parallel CI nodes to save time. Free plan up to 10 minutes of test files, free unlimited plan for open source projects.
  • webhook.site - Use custom URLs to validate webhooks, outbound HTTP requests, or emails. Temporary URLs and email addresses are always free.
  • Vaadin — Build extensible UIs in Java or TypeScript and use integrated tools, components, and design systems to iterate faster, design better, and simplify the development process. Unlimited items, 5 years free maintenance.

[Security and PKI]

  • alienvault.com — Discover compromised systems in the network
  • atomist.com—A faster, easier way to automate development tasks. It is now in beta.
  • auth0.com — Free hosting for development SSO. Up to 2 social identity providers for closed-source projects.
  • Authress — Unlimited identity provider for authentication login and access control, any project. Facebook, Google, Twitter and many more. The first 1000 API calls are free.
  • Authy - Two-factor authentication (2FA) on multiple devices with backup. A drop-in replacement for Google Authenticator. Free with up to 100 successful authentications.
  • Bridgecrew — Infrastructure as Code (IaC) security powered by open source tools - Checkov. The core Bridgecrew platform is free to use up to 50 IaC resources.
  • cloudsploit.com — Amazon Web Services (AWS) security and compliance auditing and monitoring
  • Cmd — A security platform that provides real-time access control and dynamic policy enforcement on every Linux instance in the cloud or data center
  • CodeNotary.io — Open source platform with indelible evidence of notarizing code, files, directories, or containers
  • crypteron.com—A cloud-first, developer-friendly, secure platform prevents data leakage in .NET and Java applications
  • Datree — An open-source CLI tool that prevents Kubernetes misconfiguration by ensuring that manifests and Helm charts follow best practices and organizational policies
  • Dependabot Ruby, JavaScript, Python, PHP, Elixir, Rust, Java (Maven and Gradle), . Automatic dependency updates for NET, Go, Elm, Docker, Terraform, Git Submodules, and GitHub Actions.
  • DJ Check — Scan your Django website for security vulnerabilities with this free automated inspection tool. Fork from the pony check website.
  • Doppler — A common secret manager for application secrets and configuration, with support for syncing to various cloud providers. Free for unlimited users with basic access control.
  • duo.com — Two-factor authentication (2FA) for a website or application. Free for 10 users, all authentication methods, unlimited, integrated, hardware tokens.
  • globalsign.com — Free SSL certificates for open source
  • Am I getting beaten? — REST API to get information about violations.
  • hostedscan.com—Online vulnerability scanner for web applications, servers, and networks. 10 free scans per month.
  • Internet.nl — Test modern Internet standards such as IPv6, DNSSEC, HTTPS, DMARC, STARTTLS, and DANE
  • Jumpcloud — Provides Azure AD-like Directory as a Service, user management, single sign-on, and RADIUS authentication. Free for up to 10 users.
  • keychest.net - SSL expiration management and certificate purchase with integrated CT database
  • letsencrypt.org — Free SSL certificate authority with certificates trusted by all major browsers
  • LoginRadius — Free hosted user authentication service. Email signup and 3 social providers.
  • logintc.com — Two-factor authentication (2FA) via push notifications, free for 10 users, VPN, website, and SSH
  • meterian.io - Monitor Java, Javascript, . Whether there are security vulnerabilities in dependencies in NET, Scala, Ruby, and NodeJS projects. One private project is free, open source projects are unlimited.
  • MojoAuth - MojoAuth can easily implement passwordless authentication on your web, mobile device, or any app in minutes.
  • Mozilla Observatory — Find and fix security vulnerabilities in your website.
  • Okta — User management, authentication, and authorization. Free for up to 1000 active users per month.
  • onelogin.com—Identity as a Service (IDaaS), single sign-on identity provider, cloud SSO IdP, 3 corporate applications, and 5 personal applications with unlimited users
  • Operous — Cloud instance testing tool with a comprehensive, automated suite of best practices, performance, and security tests. The free tier provides 100 minutes of testing, 10 test suites, and up to 5 instances for 1 user.
  • opswat.com — Security monitoring of computers, devices, applications, configurations,… Free 25 users and 30 days history users.
  • pyup.io — Monitor Python dependencies for security vulnerabilities and update them automatically. One private project is free, open source projects are unlimited.
  • qualys.com — Find web app vulnerabilities and audit OWASP risks
  • reCAPTCHAMe — Free reCAPTCHA and hCAPTCHA backend services. No server-side coding is required. Suitable for static websites.
  • report-uri.io — CSP program and HPKP violation reporting
  • ringcaptcha.com — A tool that uses a phone number as an ID, free of charge
  • sawolabs.com - Simplify sign-in and improve user experience by integrating passwordless authentication into your app. 5000 free identity verifications per month.
  • snyk.io—You can find and fix known security vulnerabilities in open source dependencies. Unlimited testing and fixing of open source projects. Your private project is limited to 200 tests per month.
  • ssllabs.com — Very in-depth analysis of the configuration of any SSL web server
  • StackHawk automates application scanning throughout the pipeline to find and fix security vulnerabilities before they go into production. Unlimited scanning and environments for a single application.
  • Sucuri SiteCheck - Free website security checker and malware scanner
  • Protectumus - Free website security check, website antivirus and PHP server firewall (WAF). Email notifications for registered users in the free tier.
  • TestTLS.com - Test the secure server configuration, certificates, chains, etc. for SSL/TLS services. Not limited to HTTPS.
  • threatconnect.com — Threat Intelligence: It is designed for individual researchers, analysts, and organizations who are beginning to understand cyber threat intelligence. You can release up to 3 users
  • tinfoilsecurity.com — Automatic vulnerability scanning. The free plan allows weekly XSS scanning
  • Ubiq Security — Encrypts and decrypts data using 3 lines of code and automatic key management. Free 1 app with up to 1,000,000 encryption times per month.
  • Virgil Security — Tools and services for implementing end-to-end encryption, database protection, IoT security, and more in digital solutions. For applications with up to 250 users, free.
  • Virushee — Privacy-oriented file/data scanning powered by hybrid heuristics and AI-assisted engines. Internal dynamic sandbox analysis is available. Each file upload is limited to 50MB
  • Assurance – Host enterprise-grade authorization and access control services for your applications. The free tier includes 5000,<> API requests per month.

[Management System]

  • bitnami.com — Deploy the prepared app on IaaS. Manage 1 AWS Micro Instance for free
  • Esper — MDM and MAM for Android devices with DevOps. 100 devices are free with 1 user license and 25 MB of application storage.
  • jamf.com — Device management for iPad, iPhone, and Mac, 3 devices free
  • Miradore — Device management services. Stay informed about your device fleet and protect an unlimited number of devices for free. The free plan offers basic features.
  • moss.sh - Helps developers deploy and manage their web apps and servers. Release up to 25 Git deployments per month
  • runcloud.io - Server management focuses primarily on PHP projects. You can use up to 1 server for free.
  • ploi.io - Server management tools to easily manage and deploy your servers and sites. Free for 1 server.

[Messaging and streaming]

  • Ably - A real-time messaging service with presence, durability, and guaranteed delivery. The free plan includes 300 million messages per month, 100 peak connections, and 100 peak channels.
  • cloudamqp.com — RabbitMQ as a service. Little Lemur Plan: Up to 100 million messages per month, up to 20 concurrent connections, up to 100 queues, up to 10,000 queued messages, multiple nodes in different Availability Zones
  • connectycube.com - Unlimited chat messages, P2P voice and video calls, file attachments and push notifications. SUITABLE FOR APPLICATIONS UP TO 20K MAU.
  • courier.com — Single API for push, in-app, email, chat, SMS, and other messaging channels with template management and other capabilities. The free plan includes 10,000 messages/mo.
  • pusher.com — Real-time messaging service. You can connect up to 100 connections and 200,000 messages simultaneously per day
  • scaledrone.com — Real-time messaging service. Up to 20 connections and 100,000 events per day are free
  • synadia.com—NATS.io as a service. Global, AWS, GCP, and Azure. Free forever, 4k message size per month, 50 active connections, and 5GB of data.
  • cloudkarafka.com - Share Kafka clusters for free with up to 5 themes with 10MB data and 28 days of data retention per topic.
  • pubnub.com - Swift, Kotlin and React messaging with 100 million transactions per month. A transaction may contain multiple messages.
  • eyeson API - WebRTC(SFU, MCU)-based video communication API service for building video platforms. Allows real-time data ingestion, video layout, recording, fully functional hosted web UI (quickstart), or custom UI packages. Free tier for developers with 1000 minutes of meeting minutes per month.

[Log Management]

  • bugfender.com—Up to 100k log lines can be released per day for 24 hours
  • humio.com — Release up to 2 GB per day with a retention period of 7 days
  • logdna.com – Free for a single user, no reservations, unlimited hosts and origins
  • logentries.com—You can release up to 5 GB per month with a retention period of 7 days
  • loggly.com — Free for a single user, see Lite option
  • logz.io — Up to 3 GB can be released per day with a retention period of 3 days
  • Supervisor Log360 Cloud – A log management service powered by the Supervisor. The free plan offers 50 GB of storage with a retention period of 1 month.
  • papertrailapp.com—48-hour search, 7-day archive, 100 MB/month
  • sematext.com — Release up to 500 MB per day with a retention period of 7 days
  • sumologic.com—Up to 500 MB/day can be released with a retention period of 7 days
  • logflare.app — Each app can get up to 12,960,000 entries per month for free, with a retention period of 3 days
  • logtail.com — SQL-compatible log management based on ClickHouse. You can release up to 1 GB per month with a retention period of 3 days.

[Translation Management]

  • crowdin.com — Unlimited projects, unlimited strings and open source collaborators
  • gitlocalize.com - Private and public repositories are free and unlimited
  • lingohub.com — Get up to 3 users for free, open source users are always free
  • localazy.com – 1000 source language strings, unlimited languages, unlimited contributors, startups and open source deals for free
  • Locale - Release up to 1000 strings, 1 user, unlimited languages, unlimited items
  • localizely.com — Free and open source
  • Loco — Free up to 2000 translations, unlimited translators, 10 languages/projects, 1000 translatable assets/projects
  • oneskyapp.com — Limited free edition for up to 5 users, free and open source
  • PO Editor – Release up to 1000 strings
  • Simple localization - free up to 100 translation keys, unlimited strings, unlimited languages, start trading
  • Texterify - Free for a single user
  • transifex.com — Free and open source
  • Translation.io - Free and open source
  • webtranslateit.com — Up to 500 strings can be released
  • weblate.org — For free projects, the free tier can contain up to 10,000 string sources and is self-hosted locally without limits, free and free.
  • Free PO Editor – Free for everyone

[Monitoring]

  • Pingmeter.com - 5 uptime monitors with 10-minute intervals. Monitor SSH, HTTP, HTTPS, and any custom TCP ports.
  • amixr.io – Developer-friendly alerts and on-call management with excellent Slack integration, API, and Terraform. Free call, SMS, Telegram, Slack and email package.
  • appdynamics.com — 24-hour free metrics, application performance management agents are limited to one Java, one .NET, one PHP, and one node .js
  • appneta.com — Free, data retention for 1 hour
  • assertible.com — Automate API testing and monitoring. Free plan for teams and individuals.
  • blackfire.io — Blackfire is a SaaS-delivered application performance solution. Free Hacking Program (PHP Only)
  • checklyhq.com - Open source end-to-end/comprehensive monitoring and in-depth API monitoring for developers. The free plan runs with 5 users and 50k+ checks.
  • circonus.com — 20 metrics are free
  • cloudsploit.com — AWS Security and Configuration Monitoring. Free: Unlimited on-demand scans, unlimited users, unlimited storage accounts. Subscriptions: Automated scanning, API access, etc
  • datadoghq.com — Free for up to 5 nodes
  • deadmanssnitch.com — Monitor cron jobs. 1 free snitch (monitor), more if you refer others to sign up
  • economize.cloud — Economize helps demystify cloud infrastructure costs by organizing, optimizing, and reporting on cloud resources. Pay $5000,<> per month for free on Google Cloud Platform.
  • elastic.co — Instant performance insights for JS developers. Free, 24-hour data retention
  • freeboard.io — Public programs are free. Dashboards for Internet of Things (IoT) projects
  • freshworks.com—Monitor 1 URLs at 50-minute intervals, including 10 global locations and 5 public presence pages for free
  • gitential.com — Software development analysis platform. Free: Unlimited public repositories, unlimited users, free trial of private repositories. The on-premises version is suitable for enterprises.
  • Grafana Cloud - Grafana Cloud is a composable observability platform that integrates metrics and logs with Grafana. Free: 3 users, 10 dashboards, 100 alerts, metrics storage in Prometheus and Graphite (10,000 series, 14-day retention), log storage in Loki (50 GB logs, 14-day retention)
  • healthchecks.io — Monitor cron jobs and background tasks. Up to 20 tests can be performed free of charge.
  • inspector.dev - Complete a full real-time monitoring dashboard in less than a minute, with a free, perpetual tier.
  • instrumentalapp.com - Beautiful and easy-to-use application and server monitoring with up to 500 metrics and 3 hours of data visibility for free
  • keychest.net/speedtest - Independent speed test and TLS handshake delay test for Digital Ocean
  • letsmonitor.org - SSL monitoring, up to 5 monitors free
  • loader.io — Free load testing tools with limitations
  • meercode.io — Meercode is the ultimate monitoring dashboard for the CI/CD version. Free and open source and 1 private repository.
  • netdata.cloud — Netdata is an open-source tool designed to collect real-time metrics. Fast-growing products. It can also be found on GitHub!
  • newrelic.com — The new Relic observability platform designed to help engineers create better software. From monolithic to serverless, you can inspect everything, then analyze, troubleshoot, and optimize your entire software stack. The free tier offers 100GB of free data ingestion per month, 1 free full access user, and unlimited free basic users.
  • nixstats.com - One server is free. Email notifications, public status pages, 60-second intervals, and more.
  • OnlineOrNot.com - 10 uptime monitors at 5-minute intervals, 1 page speed monitor at 12-hour intervals. Free reminders via Slack and email.
  • opsgenie.com—Powerful alerts and on-call management for running always-on services. You can release up to 5 users.
  • paessler.com—Powerful infrastructure and network monitoring solutions, including alerts, powerful visualization, and basic reporting. Release up to 100 sensors.
  • syagent.com — Non-commercial free server monitoring services, alerts, and metrics.
  • pagertree.com - Simple interface for alerts and on-call management. You can release up to 5 users.
  • pingbreak.com—Modern uptime monitoring services. Check unlimited URLs and get downtime notifications via Discord, Slack, or email.
  • pingpong.one — Advanced status page platform with monitoring capabilities. The free tier includes a public customizable status page with an SSL subdomain. The Professional Program is free for open source projects and nonprofits.
  • sematext.com — 24-hour free metrics, unlimited number of servers, 10 custom metrics, 500,000 custom metric data points, unlimited dashboards, users, and more.
  • sitemonki.com — Website, domain, Cron & SSL monitoring, 5 free monitors per category
  • skylight.io — First 100,000 requests are free (Rails only)
  • speedchecker.xyz — Performance monitoring API, check ping, DNS, etc.
  • stathat.com — Get started with 10 stats for free and no expiration
  • statuscake.com — Website monitoring, unlimited testing
  • statusgator.com — Status page monitoring, 3 monitors free
  • thousandeyes.com — Network and user experience monitoring. 3 locations and 20 data feeds for major network services are free
  • thundra.io/apm — Application monitoring and debugging. Free tier with up to 250k calls per month.
  • uptimerobot.com — Website monitoring, 50 monitors free
  • uptimetoolbox.com — Free monitoring of 5 websites, 60-second intervals, public status page.
  • zenduty.com—End-to-end incident management, alerting, on-call management, and response orchestration platform for network operations, site reliability engineering, and DevOps teams. Free for up to 5 users.
  • asayer.io — A hosted version of openreplay, an open source session replay (an alternative to FullStory and LogRocket). 1000 free sessions per month for 14 days
  • lean20.com - The public status page for incident reporting. 100% free.
  • instatus.com - Get a beautiful status page in 10 seconds. Free forever, unlimited substitutes and unlimited teams.
  • Squadcast.com - Squadcast is an end-to-end incident management software designed to help you promote SRE best practices. The free perpetual plan is available for up to 10 users.

[Crash and Exception Handling]

  • CatchJS.com - JavaScript error tracking using screenshots and click tracking. Free for open source projects.
  • bugsnag.com — Up to 2,000 bugs per month after the initial trial are processed for free
  • No exceptions—Real-time errors, features, log reports, and more. Host 3000 events/1 user per month for free. Open source and easy to self-host, unlimited use.
  • Fault Tips – Simple open source error tracking. Compatible with the open-source Sentinel SDK, 1000 events per month for free, or unlimited self-hosting
  • honeybadger.io - Exceptions, uptime, and cron monitoring. Free for small teams and open source projects (12,000 bugs per month).
  • rollbar.com — Exception and error monitoring, free plan for 5,000 errors per month, unlimited users, 30-day retention
  • sentry.io – Sentry tracks app anomalies in real time and has a small free plan. Free 5000 bugs per month / 1 user, unlimited usage if self-hosted

[Search]

  • algolia.com — Managed Search as you type (instantly). Free hacking plans up to 10,000 documents and 100,000 operations. A larger free plan is available for community/open source projects
  • bonsai.io — Free 1 GB RAM and 1 GB storage
  • searchly.com — Free 2 indexes and 20 MB storage
  • pagedart.com - AI Search as a Service, the free tier includes 1000,50000 documents, <>,<> searches. For valuable projects, a larger free tier is available.

[Email]

  • 10 Minute Mail - Free temporary email for testing.
  • AnonAddy - Open source anonymous email forwarding, create unlimited email aliases for free
  • Antideo — 10 API requests per hour for email verification, IP and phone number verification in the free tier. No credit card required.
  • biz.mail.ru—5,000 mailboxes of 25 GB each, each with DNS hosting capabilities
  • BumpFree 10 bump email addresses, 1 custom domain
  • Burn Mail - Free 5 burner email addresses, 1 mailbox, 7 days mailbox history
  • button down — Newsletter service. Free for up to 1,000 subscribers
  • CloudMailin - Outbound incoming email via HTTP POST and transactions - 10,000 free emails per month
  • cloudmersive.com—Email verification and validation API for developers, 2,000 free API requests per month
  • Contact.do — Contact form in the link (contact form) - completely free!
  • debugmail.io—An easy-to-use test mail server for developers
  • Email Temporanee - Easy to use free unlimited disposable temporary email addresses (temporary emails).Automatically expires, even if you can set it for a day.
  • elasticemail.com — 100 free emails per day. Send 0,09 emails via API for $1.000 (pay-as-you-go).
  • EmailOctopus – Free for up to 2,500 subscribers and 10,000 emails per month
  • Eva — Validate 500 million emails per day for free using REST APIs. No registration required.
  • fakermail.com — Free temporary email to test the last 100 email accounts.
  • forwardemail.net — Free email forwarding for custom domains. Create and forward an unlimited number of email addresses using your domain (note: you have to pay if you use .casa, .cf, .click, .email, .fit, .ga, .gdn, .gq, .loan, .london, .men, .ml, .pl, .rest, .ru, .tk, .top, .work TLD)
  • ImprovMX – Free email forwarding
  • inboxkitten.com - Free temporary/disposable email inbox to delete emails for up to 3 days. Open source and self-hosted.
  • inumbo.com—SMTP-based spam filter, free for 10 users
  • kickbox.io — Validate 100 emails for free with real-time APIs
  • mail.gw — 10-minute mail. Free anonymous temporary emails without obligation.
  • mail.tm — One-time emails with a user-friendly interface. No registration required.
  • mailazy.com - Mailazy is the only simple transactional email service you need. 15,000 emails/month forever free (500 emails/day sending limit).
  • mail-tester.com — Test that the DNS/SPF/DKIM/DMARC settings for email are correct, 20 free per month
  • dkimvalidator.com - Test if the DNS/SPF/DKIM/DMARC settings for email are correct, free service provided by roundsphere.com
  • mailboxlayer.com — Email validation and validation JSON API for developers. 1,000 free API requests per month
  • mailcatcher.me — Captures messages and serves them through the web interface
  • mailchimp.com — 2,000 subscribers and 12,000 emails/month free
  • MailerLite.com — 1,000 subscribers/month, 12,000 emails/month free
  • mailinator.com — A free, public email system where you can use any inbox you want
  • mailjet.com — 6,000 emails per month for free (limit of 200 emails per day)
  • Mail Kitchen – Free for life, no commitment required, 10,000 emails per month, 1,000 emails per day
  • mailmenot.io — Free one-time, temporary email service to add multiple email addresses
  • Mailnesia - Free temporary/disposable email with automatic access to registration links.
  • mailsac.com - Free API for ad-hoc email testing, free public email hosting, outbound capture, email to slack/websocket/webhook (limited to 1,500 APIs per month)
  • Mailtie.com - Free email forwarding for your domain. No registration required. Free forever.
  • mailtrap.io — Fake SMTP server for development, free plan with 1 inbox, 50 messages, no team members, 2 emails/sec, no forwarding rules
  • mailvalidator.io - Free verification of 300 emails per month, real-time API for batch processing
  • mail7.io — Free temporary email address for QA developers. Create email addresses on the fly using the web interface or API
  • mohmal.com — One-time, temporary email
  • moosend.com — Mailing list management service. Free account for startups for 6 months
  • Outlook.com - Free personal email and calendar
  • Parsio.io — Free email parser (forward email, extract data, send it to your server)
  • pepipost.com — Send 3000 emails for free for the first month, then the first 100 emails/day for free
  • phplist.com — The hosted version allows 300 emails per month to be sent for free
  • postmarkapp.com - 100 emails per month for free, unlimited DMARC weekly digests
  • Fast Email VerificationVerify 100 emails per day for free on the free tier along with other free APIs like DEA detector, DNS finder, SPF detector, etc.
  • Sender up to 15,000 emails per month - up to 2,500 subscribers
  • sendgrid.com — 100 emails and 2,000 contacts per day are free
  • sendinblue.com — Send 9,000 emails per month for free
  • sendpulse.com — Send 50 emails per hour for free and the first 12,000 emails per month for free
  • socketlabs.com – Send 40k emails for free for the first month, then the first 2000 emails/month for free
  • sparkpost.com — The first 500 emails/month are free
  • Substack – Unlimited free newsletter services. Start paying when you are charged.
  • Tempmailo - Unlimited free temporary email addresses. After two days, it automatically passes the heat.
  • HotTempMail - Unlimited free temporary emails or disposable temporary email addresses. Automatic overage within one day.
  • temp-mail.io — Free one-time, temporary email service that sends multiple emails at the same time and forwards them
  • temp-mail.org — Temporary, secure, anonymous, toll-free, disposable email addresses with REST APIs to get 100 emails per day from their disposable mailboxes for free.
  • testmail.app - Automate end-to-end email testing with unlimited mailboxes and the GraphQL API. 100 emails/month forever free, unlimited free and open source.
  • tinyletter.com — 5,000 subscribers/month free
  • trashmail.com - Free disposable email addresses with forwarding and automatic address expiration
  • Validator.Pizza — Free API for detecting disposable emails
  • Verifalia — Real-time email verification API with mailbox confirmation and one-time email address detector; Free email verification 25 times a day.
  • verimail.io — Bulk and API email verification services. 100 free verifications per month
  • Yandex.Connect — Free email and DNS hosting for up to 1,000 users
  • yopmail.fr — One-time email address
  • Zoho – Started out as an email provider, but now offers a suite of services, some of which have free plans. List of services with free plans:
    • Email is free for 5 users. 5GB/user and 25 MB attachment limit, 1 domain.
    • Sprint is free for 5 users, 5 projects and 500MB storage.
    • Documentation - Free for 5 users, with an upload limit of 1 GB and 5GB of storage. Zoho Office Suite (Writer, Sheets & Show) is bundled with it.
    • ProjectsFree for 3 users, 2 items and 10 MB attachment limit. The same plan applies to Bugtracker.
    • ConnectTeam Collaboration offers 25 users 3 groups, 3 custom apps, 3 boards, 3 manuals, 10 integrations and channels, events, and forums for free.
    • Meetings – Meetings for up to 3 meeting participants and 10 webinar attendees.
    • Vault – Personal free password management.
    • Showtime — Another conferencing software for training remote sessions for up to 5 attendees.
    • Notebook — A free alternative to Evernote.
    • Wiki – Free for 3 users with 50 MB storage, unlimited pages, zip backups, RSS and Atom feeds, access control and customizable CSS.
    • Subscriptions - Recurring billing management is free for 20 customers/subscriptions and 1 user, and all payment hosting is done by Zoho itself. Stores metrics for the last 40 subscriptions
    • Checkout - Product bill management, 3 pages and up to 50 payments.
    • Desk — Customer support management with 3 agents and private knowledge base, email tickets. Integration with Assist for 1 remote technician and 5 unattended computers.
    • Cliq — Team chat software with 100 GB storage, unlimited users, 100 users per channel, and SSO.
  • SimpleLogin – Open source, self-hosted email alias/forwarding solution. Free 5 aliases, unlimited bandwidth, unlimited replies/sends. Free for educators (students, researchers, etc.).
  • EmailJS – This is not a complete email server, this is just an email client that you can use to send emails directly from the client without exposing your credentials, the free tier has: 200 requests per month, 2 email templates, requests up to 50Kb, limited contact history.

[Font]

  • dafont - fonts displayed on this website are the property of their authors and are freeware, shareware, demo versions or public domain.
  • Everything Fonts - Offers multiple tools; @font facets, unit converters, font prompts, and font submitters.
  • Font Squirrel - Free font, licensed for commercial work. Manually select these fonts and present them in an easy-to-use format.
  • Google Fonts - Many free fonts can be easily and quickly installed in websites by downloading or linking to Google’s CDN.
  • FontGet - There are a variety of fonts available for download and neatly sorted with tags.
  • Fontshare - is a free font service. It is a growing collection of professional-grade fonts that is 100% free for personal and business use.

[Form]

  • 99inbound.com - Build forms and share them online. Get an email or Slack message for each submission. The free plan has 2 forms, 100 entries per month, basic email, and Slack.
  • Form.taxi — The endpoint for HTML form submission. Through notifications, spam blockers, and GDPR-compliant data processing. Free plan for basic use.
  • Formcake.com – Forms backend for developers, free plan allows unlimited forms, 100 submissions, Zapier integration. No libraries or dependencies are required.
  • Formcarry.com - HTTP POST form endpoint, the free plan allows 100 submissions per month.
  • formingo.coSimple HTML form for static websites to get started for free without registering an account. The free plan allows for 500 submissions per month, with a customizable reply email address.
  • formlets.com — Online forms, unlimited one-page forms/month, 100 submissions/month, email notifications.
  • formspark.io – Forms to email service, the free plan allows unlimited forms, 250 submissions per month, powered by a customer assistance team.
  • Formspree.io — Send an email using an HTTP POST request. The free tier is limited to 50 submissions per form per month.
  • Formsubmit.co — Simple form endpoint for HTML forms. Free forever. No registration required.
  • getform.io - Forms backend platform for designers and developers, 1 form, 50 submissions, single file upload, 100MB file storage.
  • HeroTofu.com - Forms backend with bot detection and encrypted archive. Forward submissions to email, Slack or Zapier via the UI. Use your own frontend, no server code required. The free plan offers unlimited forms and 100 submissions per month.
  • HeyForm.net - Drag and drop online form builder. The free tier lets you create unlimited forms and collect unlimited submissions. Comes with pre-built templates, anti-spam, and 100MB of file storage.
  • Hyperforms.app — Create forms, emails, and more in seconds without back-end code. A personal account gives you up to 50 form submissions per month for free.
  • Kwes.io - Feature-rich forms endpoint. Great for static sites. The free plan includes up to 1 website with up to 50 submissions per month.
  • Pageclip – The free plan allows one website, one form, 1,000 submissions per month.
  • Qualtrics Survey - Create professional forms and surveys with this top-notch tool. More than 50 expert-designed survey templates. Free accounts are limited to 1 active survey, 100 responses/surveys, and 8 response types.
  • smartforms.dev – Powerful and simple forms backend for your website, free forever plan allows for 50 submissions per month, 250MB file storage, Zapier integration, CSV/JSON export, custom redirects, custom response pages, Telegram and Slack bots, single email notifications.
  • staticforms.xyz - Easily integrate HTML forms, free without any server-side code. After the user submits the form, an email is sent to your registered address with the form content.
  • stepFORM.io - Quiz and form builders. The free plan has 5 forms with up to 3 steps each and 50 responses per month.
  • Typeform.com — Include beautifully designed forms on your website. The free plan only allows 10 fields per form and 100 responses per month.
  • WaiverStevie.com - Electronic signature platform with REST API. Use webhooks to receive notifications. Free plan watermark signature documents, but allows unlimited envelopes + signatures.
  • Web3Forms - Contact form for Static & JAMStack websites without writing back-end code. The free plan allows unlimited forms, unlimited domains, and 250 submissions per month.
  • WebAsk - Survey and Form Builder。 The free plan has 3 surveys per account, 100 responses per month, and 10 elements per survey.
  • Wufoo - Quick form to use on the website. The free plan has a maximum of 100 submissions per month.

[CDN and Protection]

  • Arvan Cloud — Provides cloud-related services (CDN, Cloud DNS, PaaS, Security, etc.). Free Plan Offers:
    • CDN with free SSL. 50 GB traffic + 100 million HTTP requests.
    • Free Cloud DNS unlimited domains.
    • Free cloud security with basic DDoS protection + 5 firewall rules.
    • Free VoD (Video on Demand) platform with 10 GB storage + 50 GB traffic.
  • bootstrapcdn.com — CDN for bootstrapping, bootstrapping, monitoring, and fontawesome.io
  • cdnjs.com — Simple. Fast. Reliable. Best content delivery. cdnjs is a free and open-source CDN service powered by Cloudflare that is trusted by more than 11% of websites.
    • Cloudflare Pages — Free web hosting (JAMstack platform) for front-end developers to collaborate and deploy websites. 1 build at a time, 500 builds per month, unlimited sites, unlimited requests, unlimited bandwidth.
    • Cloudflare Workers — Deploy serverless code for free on Cloudflare’s global network. 100,000 free requests per day, workers.dev subdomains.
    • Fast tunnel – Create a tunnel from the server to a publicly accessible, randomly generated trycloudflare.com domain. No account required.
  • Combinatronics – Convert your Github hosted assets (images, CSS, JS, etc.) into CDN assets. You can even render HTML files, such as from this repository. Similar to rawgit.com and raw.githack.com.
  • ddos-guard.net — Free CDN, DDoS protection, and SSL certificates
  • developers.google.com — Google-hosted libraries are the most popular content delivery network for open-source JavaScript libraries
  • GraphCDN - Scale, inspect, and secure your GraphQL APIs. 500 million requests per month for free.
  • jare.io — The CDN of the image. Use AWS CloudFront
  • jsdelivr.com — Free, fast, and reliable CDN for open source. Support for npm, GitHub, WordPress, Deno, etc.
  • Microsoft Ajax — The Microsoft Ajax CDN hosts popular third-party JavaScript libraries, such as jQuery, and enables you to easily add them to your web applications
  • ovh.ie — Free DDoS protection and SSL certificates
  • PageCDN.com – Free public CDN for everyone and free private CDN for open source/non-profit organizations.
  • Skypack — 100% native ES module JavaScript CDN. Each domain handles 100 million requests per month for free.
  • raw.githack.com — A modern alternative to rawgit.com, it only uses Cloudflare to host files
  • section.io—An easy way to launch and manage a complete Varnish caching solution. It is said that a website is free forever
  • speeder.io — Use KeyCDN. Automatic image optimization and free CDN boosting. Free and does not require any server changes
  • statically.io — CDN for Git repos (GitHub, GitLab, Bitbucket), WordPress-related assets and images
  • toranproxy.com — Packagist and GitHub’s Proxy. Discs never fail. Free for personal use, 1 developer, no support
  • UNPKG — CDN of all content on NPM
  • Namecheap Supersonic — Free DDoS protection

[Program Development]

  • anvil.works - Web application development with nothing but Python. A free tier with unlimited apps.
  • appharbor.com—.Net PaaS with 1 free worker
  • configure.it — Mobile application development platform, 2 projects free, limited features, but limited resources
  • codenameone.com — Open source, cross-platform, mobile application development toolchain for Java/Kotlin developers. Free for commercial use, unlimited number of projects
  • Deta – Deploy an unlimited number of Node.js and Python applications for free. Includes free database, authentication, and email.
  • encore.dev — Back-end frameworks use static analysis to provide automated infrastructure, boilerplate free code, and more. Includes free cloud hosting for hobby projects.
  • gigalixir.com - Gigalixir offers 1 free instance of the Elixir/Phoenix application that never sleeps, as well as a free tier PostgreSQL database limited to 2 connections, 10, 000 rows and no backups.
  • Glitch – Free public hosting with features like codesharing and real-time collaboration. The free plan has a limit of 1000 hours/month.
  • Heroku — Host your application in the cloud, single process application is free
  • Krucible — Krucible is a platform for creating Kubernetes clusters for testing and development. The free tier account provides 25 cluster hours per month.
  • Mendix — Rapid application development for enterprises, unlimited number of free sandbox environments, support for unlimited users, 0.5 GB storage and 1 GB RAM per application. In addition, Studio and Studio Pro IDEs are also allowed in the free tier.
  • m3o.com - Cloud platform for API service development. M3O is a fully managed micro-as-a-service offering focused on Go microservices development in the cloud. The free tier provides enough services to run 5 services and collaborate with others.
  • Okteto Cloud - A managed Kubernetes service designed for remote development. The free developer account comes with 5 Kubernetes namespaces, 3Gi/pod (up to 8Gi/namespace), 1CPU/pod (up to 4CPU/namespace), and 5GB disk space. The app goes to sleep after 24 hours of inactivity.
  • opeNode — Free node .js hosting of open source projects. 100 GB bandwidth/month, 100 MB memory and 1000 MB storage. Deploy using the CLI or an existing Git repository.
  • outsystems.com—Enterprise Web Development PaaS is suitable for on-premises or cloud, and the free “personal environment” offering allows unlimited code and up to 1 GB of databases
  • pipedream.com - An integration platform built for developers. Develop any workflow based on any trigger. Workflows are code that you can run for free. No need to manage servers or cloud resources.
  • pythonanywhere.com — Cloud Python application hosting. The beginner account is free, 1 Python web application your-username.pythonanywhere.com domain, 512 MB private file storage, a MySQL database
  • scn.sap.com — SAP’s in-memory platform-as-a-service offering. Free developer accounts come with 1 GB structured, 1 GB unstructured, 1 GB Git data and allow you to run HTML5, Java, and HANA XS applications
  • SUSE Developer Program—Experience cloud-native productivity for free. Get hands-on with the SUSE Cloud Application Platform and your own developer sandbox. 1 free application. Free subdomains are provided with the CLI’s API. The storage and memory quota is 1 GB.
  • fly.io - Fly is a platform for applications that need to run globally. It runs your code close to the user and scales compute in your app’s busiest cities. Write your code, package it into a Docker image, deploy it to Fly’s platform, and let it do all the work to keep your app agile. Free for side projects, $10/mo service credit automatically applies to any paid service. If you’re running a very small virtual machine, credits will go a long way.
  • Divio - A platform that uses only Docker to manage cloud applications. Subscription to development projects is free.
  • Koyeb - Koyeb is a developer-friendly serverless platform for deploying applications worldwide. Run Docker containers, web apps, and APIs seamlessly with git-based deployment, native autoscaling, a global edge network, and built-in service mesh and discovery. Koyeb offers two nano services to run your app through its forever free tier, and it also sponsors open-source projects with free resources.
  • Railroad - Railroad is an infrastructure platform where you configure infrastructure, develop that infrastructure locally, and then deploy to the cloud. 1GB disk, 512 MB RAM, free to use for $5 per month.
  • Napkin - FaaS with 1Gb memory, default timeout of 15 seconds, 1,000,000 free API calls per month.

[BaaS]

  • ably.com - APIs for real-time messaging, push notifications, and event-driven API creation. The free plan has 3M messages/month, 100 concurrent connections, 100 concurrent channels.
  • back4app.com - Back4App is an easy-to-use, flexible, and scalable backend based on a parsing platform.
  • backendless.com — Mobile and Web BaaS with 1 GB of free file storage, 50000,1000 push notifications per month, and <>,<> data objects in tables.
  • BMC Developer Program – The BMC Developer Program provides documentation and resources to help your organization build and deploy digital innovation. Access a comprehensive personal sandbox that includes platforms, SDKs, and component libraries that you can use to build and customize your applications.
  • darklang.com - Managed languages combined with editors and infrastructure. Free during beta and plan a generous free tier after beta.
  • Firebase — Firebase helps you build and run successful applications. The free Spark Plan offers authentication, hosting, Firebase ML, real-time databases, cloud storage, Testlab. A/B testing, analytics, application distribution, application indexing, cloud messaging (FCM), Crashlytics, dynamic linking, in-app messaging, performance monitoring, forecasting, and remote configuration are always free.
  • Flutter Flow — Build a Flight application UI without writing a single line of code. It also has Firebase integration. The free plan includes full access to the UI generator and free templates
  • getstream.io—Build scalable newsfeeds, activity streams, chats, and messages in hours, not weeks
  • hasura.io — Hasura extends existing databases to any hosting location and provides an instant GraphQL API for secure access to web, mobile, and data integration workloads. 1GB of data per month for free delivery.
  • iron.io — Asynchronous task processing (such as AWSLambda) with a free tier and a 1-month free trial
  • netlicensing.io - Your software provides a cost-effective and integrated license-as-a-service (LaaS) solution on any platform, from desktop to IoT and SaaS. Free basic plan when you’re a student.
  • nhost.io - Serverless backend for web and mobile applications. The free tier includes: PostgreSQL, GraphQL (Hasura), authentication, storage, and serverless capabilities
  • onesignal.com — Unlimited free push notifications
  • paraio.com — Backend service API with flexible authentication, full-text search, and caching. 1 app free, 1GB app data free.
  • posthook.io — Job scheduling service. Allows you to schedule requests at specific times. 500 booking requests/month free.
  • progress.com — Mobile backend, launcher plan with unlimited requests/sec, 1GB of data storage. Enterprise application support
  • pubnub.com — Push notifications for up to 100 million messages and 100 daily active devices per month
  • pushbots.com — Push notification service. Up to 150.<> million pushes per month are free
  • pushcrew.com — Push notification service. Unlimited notifications for up to 2000 subscribers
  • pusher.com — Free, unlimited push notifications for 2000,<> active users per month. A single API for iOS and Android devices
  • pushtechnology.com — Real-time messaging for browsers, smartphones, and everyone. 100 concurrent connections. 10 GB of data per month for free
  • quickblox.com — Communication backend for instant messaging, video and voice calls, and push notifications
  • restspace.io - Configure services such as authentication, data, files, email APIs, templates, and more for the server, then combine them into pipelines and transform the data
  • Salesforce Developer Program — Use drag-and-drop tools to quickly build applications. Customize the data model by clicking on it. Further use of Apex code. Integrate with anything with powerful APIs. Stay secure at all times with enterprise-grade security. Customize the UI with a single click or any cutting-edge web framework. The Free Developer Program provides access to the full Lightning platform.
  • ServiceNow Developer Program — Quickly build, test, and deploy applications to make them work better for your organization. Free Instances & Access to Early Preview.
  • simperium.com—Instantly and automatically move data anywhere, multi-platform, send and store structured data without limits, up to 2,500 users per month
  • stackstorm.com—Event-driven automation for applications, services, and workflows without traffic, access control, LDAP, ,…
  • streamdata.io — Convert any REST API to an event-driven streaming API. Free plan up to 100 million messages and 10 concurrent connections.
  • Supabase — An open source Firebase alternative for building backends. The free plan offers authentication, a real-time database, and object storage.
  • tyk.io — API Management with authentication, quotas, monitoring, and analytics. Free cloud offerings
  • zapier.com — Connect the applications you use to automate tasks. 5 zaps, every 15 minutes and 100 tasks/month
  • LeanCloud — Mobile backend. 1GB data storage, 256MB instances, 3000 API requests/day, 10K push/day is free. (The API is very similar to the parsing platform)
  • Liteflow - Low-code development kit designed to help you focus on the true value of your applications.
  • BudiBase - Budibase is an open-source low-code platform for creating internal applications in minutes. Supports PostgreSQL, MySQL, MSSQL, MongoDB, Rest API, Docker, K8s

[Web Hosting]

  • Alwaysdata — 100 MB free web hosting with support for MySQL, PostgreSQL, CouchDB, MongoDB, PHP, Python, Ruby, Node.js, Elixir, Java, Deno, custom web servers, accessed via FTP, WebDAV and SSH; Mailboxes, mailing lists, and application installers are included.
  • Awardspace.com – Free web hosting + free short domain name, PHP, MySQL, app installer, email sending and no ads.
  • Bubble — Visual programming to build web and mobile apps without code, free with the Bubble brand.
  • cloudno.de — Free cloud hosting for Node.js applications.
  • Deploy now – Deploy smarter. Faster deployment. Deploy now. - Deploy up to 3 web projects from your GitHub repository for free.
  • Drive To Web — Host directly to the web from Google Drive and OneDrive. Static sites only. Free forever. One site per Google/Microsoft account.
  • Fenix Web Server - A developer desktop application for hosting websites locally and sharing them publicly (live). Use its beautiful user interface, API, and/or CLI to work the way you like.
  • Free Hosting – Free hosting PHP 5, Perl, CGI, MySQL, FTP, file manager, POP email, free subdomains, free domain hosting, DNS zone editor, website statistics, free online support, and many other features not offered by free hosting.
  • Freehostia - FreeHostia offers free hosting, including the industry’s best control panel and one-click installation of over 50 free apps. There are no forced ads.
  • hostman.com — Deploy up to 3 static sites from the GitHub repository for free.
  • Neocities — Static 1 GB free storage with 200 GB bandwidth.
  • Netlify — Build, deploy, and host static sites/applications for free, 100 GB of data and 100 GB/month bandwidth.
  • pantheon.io – Drupal and WordPress hosting, automated DevOps and scalable infrastructure. Free for developers and agencies
  • readthedocs.org — Free document hosting, including versioning, PDF generation, and more
  • render.com—Unified cloud for building and running applications and sites with free SSL, global CDN, private network, automatic Git deployment, and a completely free plan for web services, databases, and static web pages.
  • SourceForge — Find, create, and publish open source software for free
  • Stormkit — Seamlessly integrates build, deploy, and host git streams with JAMStack or nodes. JS applications. 50 GB bandwidth and 1000 million requests per month for free, including free SSL
  • surge.sh — Static web publishing for front-end developers. Unlimited sites with custom domain support
  • tilda.cc — One site, 50 pages, 50 MB storage, only major predefined blocks in more than 170 available sites, no fonts, no favicon, and no custom domains
  • txti.es — Use markdown to quickly create web pages.
  • Vercel — Build, deploy, and host web applications every time with free SSL, a global CDN, and a unique preview URL. Perfect for the next one. JS and other static site generators.
  • Versoly — SaaS-focused website builder – unlimited websites, over 70 blocks, 5 templates, custom CSS, favicon, SEO, and forms. There is no custom domain
  • Qovery — Qovery is the easiest way to deploy full-stack applications on AWS, GCP, and Azure. It is a free web hosting aimed at developers with database, SSL, global CDN, and Git automated deployment
  • Qoddi - PaaS services are similar to Heroku, with a developer-centric approach and all-encompassing features. Free tier for static assets, staging, and developer applications
  • FreeFlarum – Community supported free Flarum hosting for up to 250 users (donate to remove watermarks from the footer).

[DNS]

  • 1.1.1.1 - Free public DNS resolver provided by CloudFlare, fast and secure (encrypts your DNS queries). Useful for bypassing your Internet provider’s Domain Name System blocking, preventing Domain Name System query spying, and blocking adult and malware content. Note: Just a DNS parser, not a DNS host
  • 1984.is — Free domain name services with APIs, as well as many other free domain name services included
  • biz.mail.ru — Free email and DNS hosting for up to 5000 users
  • cloudns.net — Free hosting for up to 1 domain and 50 records
  • dns.he.net — Free DNS hosting service with support for dynamic DNS
  • dnspod.com — Free DNS hosting
  • duckdns.org — Free DDN with up to 5 domains on the free tier. There are configuration guides for various settings
  • dynu.com — Free dynamic domain name service
  • fosshost.org - Free and open source hosting VPS, web, storage, and image hosting
  • freedns.afraid.org — Free DNS hosting. Free subdomains are also available based on numerous public user-contributed domains. After signing up, get a free subdomain from the Subdomains menu.
  • luadns.com — Free DNS hosting, 3 domains, all with reasonable limitations
  • namecheap.com — Free DNS. There is no limit to the number of domains
  • nextdns.io - DNS-based firewall with 30,<> free queries per month
  • Noip — A dynamic DNS service that allows up to 3 hostnames to be confirmed for free, every 30 days
  • ns1.com — Data-driven DNS, automatic traffic management, 500k free queries
  • nsupdate.info — Free and open-source dynamic DNS service
  • pointhq.com — Free DNS hosting on Heroku.
  • selectel.com — Free DNS hosting, unlimited logging, anycast
  • web.gratisdns.dk — Free DNS hosting.
  • Yandex.Connect — Free email and DNS hosting for up to 1,000 users
  • zilore.com — Free DNS hosting.
  • zoneedit.com — Free DNS hosting with dynamic DNS support.
  • zonewatcher.com—Automated backups and DNS change monitoring. 1 domain name is free
  • huaweicloud.com – Huawei free DNS hosting
  • Hetzner – Free DNS hosting from Hetzner with API support
  • Glauca - Free DNS hosting and DNSSEC support for up to 3 domains

[IaaS]

  • backblaze.com — Backblaze B2 cloud storage. 10 GB (like Amazon S3) of object storage for unlimited time is free
  • scaleway.com — S3-compatible object storage. Free 75 GB storage and external outgoing traffic
  • terraform.io — Terraform Cloud。 Free remote state management and team collaboration for teams of up to 5 users.

[Database]

  • airtable.com — Looks like a spreadsheet, but it’s a relational database with unlimited cardinality, 1,200 rows/base and 1,000 API requests/month
  • Astra — Cloud-native Cassandra as a service with an 80GB free tier
  • bit.io — PostgreSQL managed database service. Unlimited repositories, 10GB storage, 10M query rows/month.
  • cloudamqp.com — RabbitMQ as a service with up to 100 million messages per month and 20 connections for free
  • elephantsql.com — PostgreSQL as a Service, 20 MB free
  • FaunaDB — Serverless cloud database with native GraphQL, multi-model access, and up to 100 MB of free daily tier
  • HarperDb — Serverless cloud database with dynamic JSON-based architecture, 3000 IOPS, and 1GB storage
  • heroku.com — PostgreSQL as a Service with up to 10,000 rows and 20 free connections (available as a “plug-in” but can be attached to otherwise empty applications and accessed externally)
  • Upstash — Serverless Redis with a free tier of up to 10,000 requests per day, a maximum database size of 256MB, and 20 concurrent connections
  • MongoDB Atlas — The free tier offers 512 MB
  • redsmin.com — Redis online real-time monitoring and management service, 1 Redis instance is monitored for free
  • redislabs - Free 30Mb Redis instance
  • MemCachier — Managed Memcache service. Up to 25MB of space, 1 proxy server, and basic analytics are available for free
  • scalingo.com – Mostly PaaS, but offers 128MB to 192MB of MySQL, PostgreSQL or MongoDB free tiers
  • SeaTable — A flexible, spreadsheet-like database built by the Seafile team. Unlimited tables, 2,000 rows, 1 month of version control, up to 25 team members.
  • skyvia.com — Cloud Data Platform offers a free tier, and all plans are completely free during beta
  • StackBy — It’s a tool that combines spreadsheet flexibility, the power of databases, and built-in integrations with your favorite business applications. The free plan includes unlimited users, 10 stacks, 2GB add-ons per stack
  • InfluxDB — Timeseries database that frees up to 3MB/5 minutes of writes, 30MB/5 minutes of reads, and 10000,<> cardinality series
  • Quickmetrics — Timeseries database includes dashboards, free 10000,5 events/day, a total of <> metrics.
  • restdb.io - Fast and simple NoSQL cloud database service. With RESTDB.io, you get schemas, relationships, automated REST APIs (with MongoDB-like queries), and an efficient multi-user management user interface for working with data. The free tier supports 3 users, 2500 records, and 1 API request per second
  • cockroachlabs.com — Free CockroachDB up to 5 GB and 1vCPU (Limited Request Units)
  • Neo4j Aura — Manages the native Graph DBMS/analytics platform using the Cypher query language and REST API. Graph size limit (50k nodes, 175k relationships)
  • Dgraph Cloud — Use the GraphQL API to manage native graph DBMSs. Limited to 1 MB of data transfer per day
  • TigerGraph Cloud — Manages a native graph DBMS/analytics platform using SQL-like graph query language and REST APIs. 1 rpm. Available instances on AWS (4 vCPUs, 7.5 GB memory, 50 GB disk) or GCP (2 vCPUs, 8 GB memory, 128 GB disk). Idle instances hibernate after 1 hour of inactivity
  • Macrometa - NoSQL database, publish/subscribe, event processing, and serverless edge computing platform for building geographically distributed, real-time applications. The free development account allows access to 10,000 operations/day and 200MB of storage
  • Planetscale - PlanetScale is a MySQL-compatible serverless database platform, powered by Vitess, offering 3 databases for free with a storage capacity of 10GB, 1 million rows read/write per database and 1000 million rows per database write/write.
  • YugabyteDB - YuabyteDB is a distributed SQL database compatible with PostgresSQL. Cloudless is a 2 vCPU, 4 GB RAM, 10 GB disk.

[Routing, WebRTC, Web Socket Server]

  • conveyor.cloud — Visual Studio extension to expose IIS representations to local networks, or to public URLs through tunnels.
  • Hamachi — LogMeIn Hamachi is a managed VPN service that allows you to securely scale a LAN-like network to distributed teams and offers a free plan that allows unlimited networks for up to 5 people
  • localhost.run — Exposes to a public URL through a server running locally through the tunnel
  • localtunnel — Exposes servers running locally through the tunnel to a public URL. Free hosting version and open source.
  • ngrok.com — Expose to a public URL to a server running locally through the tunnel
  • Radmin VPN — Connect multiple computers together with a VPN that supports LAN-like networks. Unlimited peers. (Hamachi alternative)
  • segment.com — The Hub transforms and routes events to other third-party services. 100000,<> events/month free
  • STUN—Session traversing User Datagram Protocol [UDP] via Network Address Translator [NAT]
  • Tailscale — Zero-configuration VPN that uses the open-source WireGuard protocol. Installed on MacOS, iOS, Windows, Linux, and Android devices. Personal use free tier for 20 devices.
  • webhookrelay.com — Baidu: Manage, debug, fan-out, and proxy all webhooks to public or internal (i.e. localhost) destinations. In addition, by obtaining a public HTTP endpoint, the server running in the private network is exposed through a tunnel
  • Xirsys — Global network of STUN/TURN servers offering generous free tiers
  • ZeroTier — FOSS manages virtual Ethernet as a service. Unlimited end-to-end encrypted network, 100 customers free tier. Client for desktop/mobile/NA; Web interface for configuring custom routing rules and approving new client nodes on a private network.

[Issue Tracking and Project Management]

  • acunote.com — Free project management and scrum software for up to 5 team members
  • asana.com — Private projects with collaborators are free
  • Backlog — Everything your team needs to launch great projects on one platform. The free plan offers 1 project, 10 users, and 100MB of storage.
  • Basecamp - To-do lists, milestone management, forum-like messages, file sharing, and time tracking. Up to 3 projects, 20 users, and 1GB of storage
  • bitrix24.com — Free intranet and project management tools
  • cacoo.com — Real-time online diagrams: flowcharts, UML, networks. Free up to 15 users/charts, 25 sheets
  • Chpokify — Team-based planning poker that saves time on sprint evaluations. Up to 5 free users, free Jira integration, unlimited video calls, unlimited teams, unlimited sessions.
  • clickup.com — Project management. Free premium version with support for cloud storage. Mobile apps and Git integrations are available
  • Cloudcraft — Use Cloudcraft visual designer to design a professional architecture diagram in minutes, optimized for AWS, and smart components that can also display real-time data.
  • Codegiant — Project management using repository hosting and CI/CD. The Free Plan offers unlimited repositories, projects, and documentation for 5 team members. 500 CI/CD minutes per month. 30000,1 minutes of serverless code running per month. <>GB repository storage.
  • Confluence - Atlassian’s content collaboration tool is used to help teams collaborate efficiently and share knowledge. Free plan for up to 10 users.
  • contriber.com — Customizable project management platform, free startup plan, 5 workspaces
  • draw.io — Online charts are stored locally, in Google Drive, OneDrive, or Dropbox. All features and storage levels are available for free
  • freedcamp.com - Tasks, discussions, milestones, time tracking, calendar, file, and password manager. Free plan, unlimited project, user, and file storage.
  • easyretro.io — Free, simple and intuitive sprint review tool
  • GForge — Project management and issue tracking toolset for complex projects with self-deployment and SaaS options. The SaaS free plan offers the top 5 free users for open source projects
  • gleek.io — Provide developers with free description to charting tools. Use your keywords to create informal diagrams, UML class diagrams, object diagrams, or entity-relationship diagrams.
  • gliffy.com — Online diagrams: flowcharts, unified modeling languages, wireframing… There are also plugins for Jira and Confluence. 5 charts and 2 MB free space
  • GraphQL Inspector - GraphQL Inspector outputs a list of changes between two GraphQL architectures. Every change is accurately interpreted and marked as disruptive, non-disruptive, or dangerous.
  • huboard.com — Instant project management for GitHub issues, free and open source
  • Hygger — Project management platform. The free plan offers unlimited users, projects, and boards with a storage capacity of 100 MB.
  • Instabug — Comprehensive bug reporting and in-app feedback SDK for mobile applications. Free plan for up to 1 app and 1 member.
  • Ilograph — Interactive charts that allow users to view their infrastructure from multiple angles and levels of detail. Charts can be represented in code. The free tier has unlimited private graphs and up to 3 viewers.
  • Issue Embed - Bug reporting tool for websites that go directly to Github issues. Personal repository free plan with up to 500 issues per month and 10000,<> page views per month
  • Jira — An advanced software development project management tool used in many corporate environments. The free plan has up to 10 users
  • kanbanflow.com — Board-based project management. Free premium version with more options
  • kanbantool.com — Kanban-based project management. Free paid plan, with more options
  • Kitemaker.co - Collaborate at all stages of the product development process and track the work of Slack, Discord, Figma, and Github. Unlimited users, unlimited space. Free plan for up to 250 work items.
  • Kumu.io — Graphs containing animations, decorations, filters, clustering, spreadsheet imports, and more. The free tier allows unlimited public projects. The size of the graph is unlimited. Free private programs for students. If you don’t want to leave the file publicly online (upload, edit, download, discard), you can use sandbox mode.
  • LeanBoard — Collaborative whiteboard with notes on GitHub questions (useful for example mapping and other techniques)
  • Linear – Issue tracker with a simplified interface. Free unlimited membership, up to 10MB file upload size, 250 issues (excluding archive)
  • MeisterTask — Online task management for teams. Release up to 3 projects, unlimited project members.
  • MeuScrum - Free online Scrum tool with Kanban boards
  • nTask — Project management software that enables your team to collaborate, plan, analyze, and manage day-to-day tasks. The basic plan is free forever, 100 MB storage, 5 users/teams. Unlimited workspaces, meetings, tasks, timelines, and issue tracking.
  • Ora - Agile task management and team collaboration. Free for up to 3 users, with a file limit of 10 MB.
  • pivotaltracker.com — Free for unlimited public projects and two private projects with a total of 3 active users (read-write) and unlimited passive users (read-only).
  • plan.io — Project management with repository hosting and more options. Free for 2 users, with 10 customers and 500MB of storage
  • planitpoker.com — Free Online Planning Poker (Estimation Tool)
  • saas.zentao.pm - Application lifecycle management solutions for issue tracking and project management, both on-premise and open source.
  • ScrumFast - The Scrum board has a very intuitive interface that frees up to 5 users.
  • Shortcut - Project Management Platform. Free forever for up to 10 users.
  • SpeedBoard - Agile and Scrum Review Board - Free.
  • Shake - In-app bug reporting and feedback tool for mobile apps. Free plan, 10 bug reports per app/month.
  • Tadum - Meeting agenda and meeting recording app designed for recurring meetings and free for teams of up to 10 people
  • taiga.io — A project management platform for startups and agile developers, free for open source
  • Tara AI — Simple sprint management service. The free plan has unlimited tasks, sprints, and workspaces with no user limits.
  • targetprocess.com — Visual project management, from Kanban and Scrum to virtually any operational process. Free for unlimited users, up to 1,000 data entities {More details}
  • taskade.com—Real-time collaborative task lists and outlines for teams
  • taskulu.com — Role-based project management. You can release up to 5 users. Integration with GitHub/Trello/Dropbox/Google Drive
  • teamwork.com — Project management and team chat. Free for 5 users and 2 projects. Premium plans are available.
  • testlio.com — Issue tracking, test management, and beta testing platform. Free for private use
  • terrastruct.com — An online charting tool dedicated to software architecture. Each chart can be layered up to 4 layers for free.
  • todoist.com—Collaborative and personalized task management. Free, premium, and team plans are available. Discounts for eligible users.
  • trello.com — Board-based project management. Unlimited individual boards, 10 team boards.
  • Tweek - Simple weekly to-do calendar and task management.
  • ubertesters.com — Test Platform, Integration and Group Check, 2 projects, 5 members
  • vabotu - Collaboration tool for project management. Free and other plans are available. The Freelance plan is for 10 users and includes messaging, taskboard, 5GB online storage, workspace, export data.
  • vivifyscrum.com — Free tools for agile project management. Compatible with Scrum
  • Wikifactory — Product design services and projects, VCS and problems. The free plan offers unlimited projects and collaborators as well as 3GB of storage.
  • Yodiz — Agile development and issue tracking. Free up to 3 users, unlimited projects.
  • YouTrack - Free hosted YouTrack (InCloud) for FOSS projects, private projects (free for 3 users). Includes time tracking and agile boards
  • zenhub.com — The only project management solution in GitHub. Free for public repositories, OSS, and nonprofits
  • zepel.io - Project management tools that allow you to plan features, collaborate across disciplines, and build software together. Release up to 5 members. No functional limitations.
  • zenkit.com — Project management and collaboration tools. Free for up to 5 members, 5 GB attachment.
  • Zube - Project Management, Free Plan for 4 Projects and 4 Users. Provide GitHub integrations.
  • Toggl — Offers 2 free productivity tools. Toggl Track is used as a time management and tracking app, offering a free plan that offers seamless time tracking and reporting designed for freelancers. It has unlimited track records, projects, clients, tags, reports, and more. The Toggl plan is for mission planning, which offers a free plan for solo developers with unlimited tasks, milestones, and timelines.

[Storage and Media Processing]

  • borgbase.com — Simple and secure offsite backup hosting for Borg Backup. 10 GB of available backup space and 2 repositories.
  • icedrive.net - Simple cloud storage service. 10 GB of free storage
  • sync.com - End-to-end cloud storage services. 5 GB free storage
  • pcloud.com - Cloud storage services. Up to 10 GB of free storage
  • sirv.com — Intelligent image CDN with dynamic image optimization and resizing. The free tier includes 500 MB of storage and 2 GB of bandwidth.
  • image4.io—Image uploads, powerful operations, storage and delivery of websites and applications, and SDKs, integrations, and migration tools. The free tier includes 25 credits. 1 credit equals 1 GB of CDN usage, 1 GB of storage, or 1000 image conversions.
  • cloudimage.com—Complete image optimization and CDN services for more than 1500,360 access points worldwide. Multiple image resizing, compression, watermarking functions. Open-source plugins for responsive images, 25-degree image making, and image editing. Free monthly plan with 25GB of CDN traffic and <>GB of cache storage and unlimited conversions.
  • cloudinary.com — Image uploads, powerful operations, storage and delivery of sites and applications, and libraries for Ruby, Python, Java, PHP, Objective-C, and more. The free tier includes 25 credits per month. 1 credit equals 1,000 image conversions, 1 GB of storage, or 1 GB of CDN usage.
  • easyDB.io — One-click managed database provider. They provide a database for the programming language of your choice for development purposes. The database is temporary and will be deleted after 24 or 72 hours of the free tier.
  • embed.ly — Provides APIs for embedding media in web pages, responsive image scaling, extracting elements from web pages. Up to 5,000 URLs per month at 15 requests per second
  • filestack.com — File picker, conversion and delivery, 250 files, 500 conversions, and 3 GB bandwidth free
  • gumlet.com — Images are resized per service. It also optimizes images and performs delivery via CDN. The free tier includes 1 GB bandwidth and unlimited image processing per month for 1 year
  • image-charts.com — Unlimited image chart generation with watermark
  • imgen - Free unlimited social cover image generation API with no watermark
  • jsonbin.io — Free JSON data storage service, ideal for small web applications, websites, and mobile applications.
  • kraken.io — Image optimization for website performance as a service, up to 1 MB file size on the free plan
  • npoint.io — JSON storage with collaborative mode editing
  • otixo.com — Encrypt, share, copy, and move all your cloud storage files from one place. The basic plan offers unlimited file transfers up to 250 MB. File size, allowing 5 encrypted files
  • packagecloud.io — Hosted package libraries for Yum, APT, RubyGem, and PyPI. Limited free plan, open source plans available on demand
  • piio.co — Image optimization and delivery that provides responsiveness for each website. Free plans for developers and personal websites. Includes free CDN, WebP, and Lazy loading out of the box.
  • Pinata IPFS — Pinata is the easiest way to upload and manage files on IPFS. Our user-friendly interface combined with our IPFS API makes Pinata the easiest IPFS lockdown service for platforms, creators and collectors. 1 GB of storage is provided for free and access to the API
  • placeholder.com — A quick and easy image placeholder service
  • placekitten.com — A quick and easy service for getting photos of kittens used as placeholders
  • plot.ly — Map and share your data. The free tier includes unlimited public files and 10 private files
  • podio.com — You can use Podio with a team of up to five people and try out the features of the Basic plan, except for user management
  • QuickChart — Generate embeddable image charts, graphs, and QR codes
  • redbooth.com — P2P file synchronization, free for up to 2 users
  • Skynet — An open protocol that uses Sia to host data and web applications on a decentralized web. The free tier offers up to 100GB of storage.
  • Storj — Tencent: Provides decentralized private cloud storage for applications and developers. The free tier offers 3 projects with 50 GB storage per project/month and 50 GB bandwidth per project/month
  • tinypng.com — API for compressing and resizing PNG and JPEG images, 500 compressions per month for free
  • transloadit.com — Handles file upload and encoding of video, audio, images, and documents. The GitHub Student Development Kit is free for open source, charities, and students. 2 GB for free for a commercial application test drive
  • twicpics.com - Responsive image-as-a-service. Provides image CDN, media processing API, and front-end library to automate image optimization. This service can be up to 3 GB/month.
  • uploadcare.com — Uploadcare provides the ultimate toolkit for media pipelines based on cutting-edge algorithms. Developers can use all features for free: file upload API and UI, image CDN and source code services, adaptive delivery, and smart compression. The free tier has 3000 uploads, 3 GB traffic, and 3 GB storage
  • imagekit.io – With an automatically optimized, real-time converted, and stored mirrored CDN that you can integrate with your existing setup in minutes. The free tier includes up to 20 GB of bandwidth per month
  • internxt.com – Internxt Drive is a zero-knowledge file storage service based on absolute privacy and uncompromising security. Sign up and get 2 GB free, forever!
  • degoo.com – AI-based cloud storage with up to 100Gb, 5 devices, 500Gb referral bonus for free (365 days of account inactivity).

[Design and UI]

  • AllTheFreeStock - A curated list of free stock images, audio, and video.
  • Ant Design Landing Page - The Ant Design landing page provides templates built from Ant Motion’s motion components. It has a wealth of homepage templates, download the template code package, and you can use it quickly. You can also use the editor to quickly build your own dedicated pages.
  • Backlight — With collaboration between developers and designers at its core, Backlight is a complete coding platform where teams can build, document, publish, scale, and maintain design systems. The “Free Plan” allows up to 3 editors to work on 1 design system and has unlimited viewers
  • BoxySVG — A free installable web application for drawing SVG and exporting to SVG, PNG, JPEG and other formats
  • clevebrush.com — Free graphic design/picture collage app that also offers paid integrations of IT components.
  • cloudconvert.com —Transform anything into anything. 208 supported formats including videos to be GIF.
  • CodeMyUI - A collection of carefully selected web design and user interface inspiration with code snippets
  • coolors - color palette generator. Gratis.
  • designer.io — Design tools for user interfaces, illustrations, and so on. There is a native application. gratuitous
  • figma.com — Online collaborative design tool for teams; The free tier includes unlimited files and viewers with up to 2 editors and 3 projects
  • framer.com - Framer helps you iterate and animate interface ideas for your next app, website or product – starting with a powerful layout. For anyone who is validating Framer as a professional prototyping tool: unlimited audience, up to 2 editors, up to 3 projects.
  • Gradientos - Makes selecting gradients quick and easy.
  • Icon Horse – Get the highest resolution icons for any website from our simple API.
  • Icons8 — icons, illustrations, photos, music, and design tools. Free Plan offers limited formats at lower resolutions. When using our assets, please link to Icons8
  • imagebin.ca — Image paste bin
  • Invision App - UI design and prototyping tool. Desktop and webapp available. Can be used free with 1 active prototype.
  • landen.co — Generate, edit, and publish beautiful websites and landing pages for your startup. None of the code. The free tier allows you to have a website, fully customizable and published on the web
  • lensdump.com - Free cloud image hosting.
  • Lorem Picsum - A free tool that is easy to use with stylish placeholders. Just add your desired image size (width and height) after our URL and you will get a random image.
  • LottieFiles - The world’s largest online platform, the world’s smallest animation format for designers, developers, and more. Access Lottie animation tools and plugins for Android, iOS, and the web.
  • MagicPattern — A collection of CSS and SVG background generators, tools for gradients, patterns, and blobs.
  • marvelapp.com — Design, prototype, and collaborate, with the free plan limited to one user and one project
  • Mindmup.com — Unlimited free mind maps and store them in the cloud. Your mind maps are available anytime, anywhere, instantly, and on any device
  • Mockplus iDoc - Mockplus IDOC is a powerful design collaboration and handoff tool. The free plan includes 3 users and 5 projects, all features are available.
  • mockupmark.com — Create realistic t-shirt and clothing models for social media and e-commerce, 40 free mockups
  • Octopus.do — Visual Sitemap Builder. Build your website structure in real time and share it quickly to collaborate with your team or clients
  • Pencil - Uses Electron’s open source design tools
  • Penpot - Web-based open source design and prototyping tool. SVG is supported. Completely free.
  • pexels.com - Free commercial stock photos. There is a free API that allows you to search for photos by keyword.
  • photopea.com — A free, advanced online design editor with Adobe Photoshop user interface support for PSD, XCF and Sketch formats (Adobe Photoshop, Gimp, and Sketch apps).
  • pixlr.com — Free online browser editor for commercial use
  • Plasma - A fast, easy-to-use, powerful web design tool and page builder that integrates into your codebase. Build responsive pages or complex components; Code extensions are optional; and publish to production websites and applications
  • Pravatar - generates random/placeholder fake avatars that can hotlink directly in your web/app.
  • Proto.io - Create fully interactive user interface prototypes without coding. After the free trial ends, the free tier is available. The free tier includes: 1 user, 1 project, 5 prototypes, 100MB online storage, and preview in Proto.io app.
  • resizeappicon.com — A simple service to adjust and manage your application icons.
  • Rive — Tencent: Create beautiful animations and send them to any platform. Free forever for individuals. This service is an editor that can host all graphics on their servers. They also provide runtimes for many platforms to run graphics made with Rive.
  • smartmockups.com — Create product models, 200 free models.
  • tablericons.com — Copy and paste SVG editable icons for free
  • UI Avatars - Generate avatars with initials based on names. These URLs can be hotlinked directly in your web/app. Configuration parameters are supported through URLs.
  • unDraw - a constantly updated collection of beautiful SVG images that you can use completely free of charge with no attribution.
  • unsplash.com - Free stock photos for commercial and non-commercial purposes (do whatever you want with the license).
  • vectr.com — Free Web+ desktop design application.
  • walkme.com — Enterprise-grade mentoring and engagement platform with 3 steps and up to 5 steps on a free plan
  • Webflow – WYSIWYG website builder with animations and website hosting. 2 items are free
  • Updrafts.app – WYSIWYG website builder tailwind-based design. Free for non-commercial use
  • whimsical.com - Collaborative flowcharts, wireframes, sticky notes, and mind maps. Create up to 4 free boards.
  • Zeplin — A collaborative platform for designers and developers. Showcase design, assets, and styling guides. Free for 1 project.
  • Pixelixe — Create and edit captivating, unique graphics and images online.
  • Responsively App - A free development tool for faster and more accurate responses to web application development
  • SceneLab - Online mock-up graphic editor with an ever-expanding collection of free design templates
  • xLayers - Preview and convert sketch design files to ANGLE, REACT, VUE, LitElement, Stensave, Xamarin, and more (free and open source on https://github.com/xlayers/xlayers).%E4%B8%8A%E5%BC%80%E6%BA%90)
  • Grapedrop — Responsive, powerful, SEO-optimized web page builder based on the GRapesJS framework. The first 5 pages are free, unlimited custom domains, all features and simple to use.
  • Mastershot - Completely free browser-based video editor. No watermark, up to 1080p export options.
  • Unicorn Platform - Easy landing page builder with hosting. 1 free website.

[Design Inspiration]

  • awwwards. - [Top Sites] showcasing all the best design websites (voted by designers)
  • Behance - [Design Show] Where designers showcase their work. You can filter using the categories of UI/UX items.
  • dribbble – [Design Showcase] Unique design inspiration, usually not from real application X research time.
  • Mobile Patterns - [Phone Screenshot] A library of design inspiration featuring the best UI UX patterns (iOS and Android) for designers, developers, and product manufacturers.
  • Screenlane – [Mobile Screenshot] Get inspired to keep up with the latest web and mobile app UI design trends. You can filter by mode and application.
  • SCRNSHTS - [Mobile screenshot] Screenshots of selected best app store designs.
  • UI Garage - [Mobile and web screenshots] Daily UI inspiration and patterns for designers, developers to find inspiration, tools, and the best resources for your projects

[Data Visualization]

  • IP Geolocation — Free developer plan with 3,<> requests per month.
  • carto.com — Create maps and geospatial APIs from your data and public data
  • developers.arcgis.com — APIs and SDKs for maps, geospatial data storage, analytics, geocoding, routing, and more across web, desktop, and mobile. 2,000,000 free basemap tiles, 20,000 unstored geo codes, 20,000 simple routes, 5,000 drive-time calculations, 5 GB free tiles + monthly data storage
  • Foursquare - Location discovery, place search and context-aware content from the Places API and Pilgrim SDK.
  • geoapify.com—Vector and raster map tiles, geocoding, places, routes, contour line APIs. 3000 free requests per day.
  • geocod.io — Geocode via API or CSV upload. 2500 free inquiries per day.
  • geocodify.com —Geocoding and geolocation via API or CSV upload. 10K free queries/month.
  • giscloud.com — Visualize, analyze, and share geographic data online.
  • gogeo.io — Map and geospatial services with easy-to-use APIs and support for big data
  • graphhopper.com offers a free package for developers for path selection, path optimization, distance matrix, geocoding, map matching.
  • here — APIs and SDKs for maps and location-aware applications. 25,<> transactions/month free.
  • mapbox.com — Maps, geospatial services, and SDKs used to display map data
  • maptiler.com — Vector maps, map services, and SDKs for map visualization. Free vector tiles with weekly updates and four map styles are available.
  • opencagedata.com — Geocoding API, which aggregates OpenStreetMap and other open geographic resources. 2,500 free inquiries per day
  • osmnames — Geocoding, search results sorted by the popularity of the relevant Wikipedia page.
  • PositionStack—Free geocoding of global locations and coordinates. There are 25.000 applications for personal use per month
  • stadiamaps.com — Map tiling, routing, navigation, and other geospatial APIs. 2500 free map views and API requests/day for non-commercial use and testing.
  • maps.stamen.com - Free map collage and collage hosting
  • GeocodeAPI - Geocode API: Pelias-based coordinate transformation and geolocation of addresses. Batch geocoding via CSV. There are 35,<> free requests per month.
  • Geokeo api - The geocoding API has language corrections and more. Global coverage. 2,500 free inquiries per day

[Package Build System]

[IDE and Code Editing]

  • 3v4l - Free online PHP shell and code snippet sharing site to run your code in over 300 PHP versions
  • Android Studio — Android Studio provides the fastest tool for building apps on all types of Android devices. An open source IDE, free for everyone, is the best choice for developing Android applications. Works with Windows, Mac, Linux and even ChromeOS!
  • Apache Netbeans — Development environment, tooling platform, and application framework.
  • apiary.io — Collaborative design API with instant API simulation and document generation (unlimited API blueprints and unlimited users for free, just one admin account and managed documents).
  • Atom - Atom is a crackable text editor based on Electron
  • Binder - Turns Git repos into a collection of interactive notebooks. This is a free public service
  • BlueJ — This is a free Java development environment designed for beginners and used by millions of people around the world. Powered by Oracle and Simple graphical user interfaces to help beginners
  • Bootify.io - Spring Boot application builder with custom database and REST API.
  • cacher.io — Tagged snippet manager with support for more than 100 programming languages
  • Code::Blocks — Free Fortran & C++ IDE. Open source and runs on Windows, MacOS, and Linux
  • codesnip.com.br — Simple snippet manager with categories, search and tags. Free and unrestricted.
  • cocalc.com — (formerly SageMathCloud, in cloud.sagemath.com) – Collaborative computing in the cloud. The browser accesses full Ubuntu, built-in collaboration and a large number of free math, science, and data science software, including Python, LaTeX, Jupyter notebooks, SageMath, SCRIPKITLINE, etc
  • ide.cs50.io - Free IDE powered by Harvard AWS Cloud9.
  • codepen.io — The web front-end side of the CodePen playground.
  • codesandbox.io — React, Vue, Angular, Preact, etc. online
  • Components.studio - Write component code independently, visualize them in stories, test them and publish them to npm.
  • Eclipse Che - Native web- and Kubernetes-based IDE for supporting multilingual development teams. Open source and community driven. Red Hat’s hosted online instance is located in workspace.openshift.com.
  • fakejson.com — FakeJSON uses its API to help you generate fake data quickly. Make an API request describing what you want and how you want it. The API returns everything in JSON format. Speed up the process of bringing your idea to market until you achieve it.
  • gitpod.io — An instant, code-ready development environment for GitHub projects. Free for open source.
  • ide.goorm.io GoormIDE is a complete IDE on the cloud. Support for multilingual, Linux-based containers through a full-featured web-based terminal, port forwarding, custom URLs, real-time collaboration and chat, shared links, Git/Subversion support. And many more features (free tier includes 1 GB memory and 10 GB storage per container, 5 container slots).
  • JDoodle — Online compiler and editor for over 60 programming languages, with a free plan to compile up to 200 credits of rest API code per day.
  • jetbrains.com — productivity tools, IDEs, and deployment tools (aka IntelliJ IDEA, PyCharm, etc.)). Free licenses for students, teachers, open source, and user groups
  • jsbin.com — JS Bin is another playground and code-sharing site for front-end websites. Markdown, Jade, and Sass are also supported
  • jsfiddle.net — JS Fiddle is a playground and code-sharing site for the front-end web that also supports collaboration.
  • JSONPlaceholder Some REST API endpoints return some fake data in JSON format. If you want to run the server locally, you can also use the source code
  • Katacoda — An interactive learning and training platform for software engineers that helps developers learn and companies increase adoption.
  • Lazarus — Lazarus is a Delphi-compatible, cross-platform IDE for rapid application development
  • micro-jaymock - Tiny API simulation microservices used to generate fake JSON data
  • mockable.io — Mockable is a simple configurable service that emulates a RESTful API or SOAPWeb service. This online service allows you to quickly define REST API or SOAP endpoints and have them return JSON or XML data
  • mockaroo — Mockaroo allows you to generate real test data in CSW, JSON, SQL, and Excel formats. You can also create simulations for backend APIs.
  • Mocklets - An HTTP-based mock API simulator that helps emulate APIs for faster parallel development and more comprehensive testing, with no lifecycle layer.
  • Paiza — Develop web applications in a browser without any setup. Free Plan offers 1 server with a 24-hour lifespan and 4 hours of daily uptime with 2 CPU cores, 2 GB RAM and 1 GB storage
  • Prepros - Prepros can compile Sass, Less, Stylus, Pug/Jade, Haml, Slim, CoffeeScrip, and TypeScrip, reload your browser, and make your website development and testing very easy so you can focus on making them perfect. It only takes a few clicks to add your own tools
  • Replit — Cloud coding environment for various programming languages.
  • SoloLearn — A great playground for cloud programming that runs code snippets. Supports multiple programming languages. Registration is not required to run the code, but it is required when you need to save the code on their platform. Free courses are also available for beginner and intermediate programmers.
  • stackblitz.com — Online/cloud code IDE for creating, editing, and deploying full-stack applications. Supports any popular NodeJS-based front-end and back-end frameworks. Shortcut to create a new project: https://node.new.
  • Visual Studio Code - The code editor is redefined and optimized for building and debugging modern web and cloud applications. Developed by Microsoft for Windows, macOS and Linux.
  • Visual Studio Community — Fully featured IDE with thousands of extensions, cross-platform application development (download Microsoft extensions for iOS and Android), desktop, web and cloud development, multi-language support (C#, C++, JavaScript, Python, PHP, etc.).
  • VSCodium - Community-driven, no telemetry/tracking, freely licensed binary distribution of VSCode, Microsoft editor
  • wakatime.com — Quantitative self-measurement of coding activities, use of text editor plugins, limited free plan.
  • WebComponents.dev — In the browser IDE, web components are written independently using 58 available templates, supporting stories and tests.

[Analytics, Events & Statistics]

  • Statvoo Analytics — Free customer analytics for all your websites forever, with unlimited monthly activities
  • AVO — Streamline analysis publishing workflows. Single-source truth tracking plan, type-safe analysis trace library, in-app debugger, data observability, capture all data issues before you publish. Free and 2-hour data observability review for 1 workspace members.
  • Branch — Mobile analytics platform. The free tier offers deep links and other services for up to 1,<> mobile app users.
  • Clicky — Web analytics platform. Free plan 1 website 3000 views analysis.
  • Databox — Business insights and analysis by combining other analytics and BI platforms. The free plan offers 3 users, a dashboard, and a data source. 1100 million historical data records
  • indicative.com — A customer analytics platform to optimize customer engagement, conversion rates, and retention. Up to 5000 million events per month are held for free
  • Panelbear.com — The blazingly fast and private free tier includes 5000,<> page views per month for an unlimited number of websites
  • Hitsteps.com — 1,2 page views per month for 000 website
  • amplitude.com — 100 million events per month, up to 2 applications
  • Flagsmith - publishing feature; Manage feature flags across web, mobile, and server-side applications. Use our hosted API, deploy to your own private cloud, or run on-premises
  • GoatCounter — GoatCounter is an open source web analytics platform that is available as a hosted service (free for non-commercial use) or as a self-hosted application. Its goal is to provide easy-to-use and meaningful privacy-friendly web analytics as an alternative to Google Analytics or Matomo. The free tier is for non-commercial use and includes an unlimited number of sites, 6 months of data retention, and 10,<> page views/month.
  • Google Analytics — Google Analytics
  • Expensify — Expense reports, free personal report approval workflows
  • getinsights.io - Privacy-focused, cookie-free analytics with up to 5000,<> free events per month
  • heap.io — Automatically capture every user action in an iOS or web application. Up to 5000 free visits per month
  • Hotjar — Web analytics and reporting. The free plan allows 2000 page views per day. 100 snapshots/day (maximum capacity: 300). 3 snapshot heatmaps that can be stored for 365 days. Unlimited team members.
  • Keen — Custom analytics for data collection, analysis, and visualization. 50000,<> events/month free
  • Yandex.Metrica — unlimited free analysis
  • Mixpanel — Track 100000,<> users per month, unlimited data history and seats, US or EU data residency
  • Moesif — API analysis for REST and GraphQL. (Up to 500000,<> API calls can be released per month)
  • Molasses - Powerful feature flags and A/B testing. Release up to 3 environments, each with 5 feature flags
  • optimizely.com — A/B testing solution, free starter plan, 1 website, 1 iOS, and 1 Android app
  • Microsoft PowerBI — Business insights and analytics for Microsoft. The free plan offers limited usage with 100 million user licenses.
  • quantcast.com — unlimited free analytics
  • sematext.com — Perform up to 5,1 actions per month for free, <> day of data retention, unlimited dashboards, users, and more.
  • Similar Web — Web and mobile app analytics. The free plan offers 5 results per metric, 1 month of mobile app data, and 3 months of website data.
  • StatCounter — Web Viewer analysis. The free plan analyzes 500 of the newest visitors.
  • Tableau Developer Program — Innovate, create, and make Tableau work perfectly for your organization. The Free Developer Program offers Tableau Online a personal development sandbox license. This version is the latest pre-release version, so data developers can test every feature of this super platform
  • usabilityhub.com — Test designs and models on real people and track visitors. Free for one user, unlimited testing
  • woopra.com — Free user analytics platform with 500K operations, 90-day data retention, and more than 30 one-click integrations.
  • counter.dev — Network analysis made simple and therefore privacy-friendly. Pay for what you want for free or by donation.

[Session Recording]

  • Visualime.com — Free and unlimited session recordings with no data limits
  • Reactflow.com — per site: 1000 page views/day, 3 heatmaps, 3 widgets, free bug tracking
  • LogRocket.com - 1000 sessions per month, retention for 30 days, bug tracking, live mode
  • FullStory.com — Baidu: 1000,1 sessions per month, 3 month of data retention, <> user seats. More information here.
  • hotjar.com — per site: 2000 page views/day, 3 heatmaps, 3 months of data storage,…
  • inspectlet.com — 1 website is available 2500 times a month for free
  • livesession.io — 1 website 5,000 times a month for free
  • Microsoft Clarity - Session recording is completely free, with no traffic limits, no project limits, and no sampling
  • mouseflow.com — 1 website offers 500 meetings per month free of charge
  • mousestats.com — 1 website 100 lessons per month for free
  • smartlook.com — Free package for web and mobile apps (1500 sessions/month), 3 heatmaps, 1 funnel, 1 month of data history
  • usersurge.com — 25,<> per month for individuals.
  • howuku.com — Track user interactions, engagement, and events. Up to 5000 free visits per month
  • UXtweak.com — Record and observe how visitors use your website or application. Small projects are free for unlimited time

International mobile number verification API and SDK

  • Cognalys – Freemium mobile number verification with an innovative and reliable method instead of using SMS gateways. Free 10 attempts and 15 verifications per day
  • numverify — Global phone number validation and lookup JSON API. 250 API requests/month
  • veriphone — Global phone number verification in a free, fast, and reliable JSON API. 1000 requests/month

[Payment and billing integration]

  • Currency Freak — Provides current and historical currency exchange rates. The free developer plan offers 1000 requests per month.
  • CurrencyAPI — Real-time currency exchange rates for physical and cryptocurrency currencies, available in JSON and XML formats. The free tier provides 1,250 API requests per month.
  • Currency tier – Reliable exchange rates and currency conversion for your business with 1,000 API requests per month for free
  • currencystack.io — Production-ready, real-time exchange rates for 154 currencies.
  • exchangerate-api.com - Easy-to-use currency conversion JSON API. The free tier with no request limit.
  • FraudLabsPRO — Helps merchants prevent payment fraud and chargebacks. The free micro plan offers 500 inquiries per month.
  • MailPopin - Get the most out of Stripe notifications with contextualized information.
  • Nami ML - A complete platform for in-app purchases and subscriptions on iOS and Android, including no-code paywalls, CRM, and analytics. All basic features are provided for free to run IAP business.
  • RevenueCat — Managed backend for in-app purchases and subscriptions (iOS and Android). Release up to $10k/mo in tracking revenue.
  • VAT — Instant VAT ID validation and EU VAT rate API, free of charge 100 API requests per month
  • Freecurrencyapi.net — Free currency conversion and exchange rate data API. 10 requests per hour without an API key, 50000,<> requests per month when signing up for free.

[Docker related]

  • canister.io — 20 free private repositories for developers and 30 free private repositories for teams to build and store Docker images
  • Container Registry Service - Port-based container management solution. The free tier provides 1 GB of storage for private repositories.
  • Docker Hub — A free private repository and unlimited public repositories for building and storing Docker images
  • Play Docker — a simple, interactive, and fun playground for learning Docker.
  • quay.io — Build and store container images with unlimited free public repositories
  • TreeScale.com — Host and manage container images with group permissions. The free tier provides 1 GB of storage for private repositories.
  • Platform9 - Managed Kubernetes plane。 The free plan offers management capabilities for up to 3 clusters and 20 nodes. Note: You must provide the cluster infrastructure yourself.

[Discover Index]

[Development Blog Site]

  • BearBlog – Minimalist and Markdown-driven blog and website builder.
  • Dev.to - Where programmers share ideas and help each other grow.
  • Hashnode — Hassle-free blogging software for developers!
  • Medium — Know more intelligently what is important to you.

[Comment Platform]

  • Staticman - Staticman is a Node.js application that receives user-generated content and uploads it as data files to GitHub and/or GitLab repositories using pull requests.
  • GraphComment - GraphComment is a review platform that helps you build an active community from your website audience.
  • Discourse - Lightweight comment widget built on GitHub issues. Use GitHub issues for blog comments, wiki pages, and more!
  • Disqus - Disqus is a networked community platform used by hundreds of thousands of sites all over the web.

[Screenshot API]

  • 24browser.com – Capture beautifully rendered website screenshots at scale with powerful API.
  • ApiFlash — A screenshot API based on Aws Lambda and Chrome. Handles full page, capture timing, viewport dimensions, …
  • microlink.io – It turns any website into data such as metatags normalization, beauty link previews, scraping capabilities or screenshots as a service. 250 reqs/day every day free.
  • ScreenshotAPI.net - Screenshot API use one simple API call to generate screenshots of any website. Build to scale and hosted on Google Cloud. Offers 100 free screenshots per month.
  • screenshotlayer.com — Capture highly customizable snapshots of any website. Free 100 snapshots/month
  • screenshotmachine.com — Capture 100 snapshots/month, png, gif and jpg, including full-length captures, not only home page
  • PhantomJsCloud — Browser automation and page rendering. Free Tier offers up to 500 pages/day. Free Tier since 2017.
  • Webshrinker.com — Web Shrinker provides web site screenshot and domain intelligence API services. Free 100 requests/month.

[Browser-based JavaScript emulation]

  • JsLinux — A very fast x2 virtual machine capable of running Linux and Windows 86k.
  • Jor1k — An OpenRISC virtual machine capable of running Linux on network support.
  • v86 — x86 virtual machines capable of running Linux and other operating systems directly in the browser

[Privacy Management]

  • Bearer - Helps achieve privacy by design through audits and ongoing workflows so that organizations can comply with GDPR and other regulations. The free tier is limited to smaller teams and SaaS versions.
  • Osano - Consent management and compliance platform, covering everything from GDPR representatives to cookie banners. The free tier offers basic functionality.
  • Iubenda - Privacy and Cookie Policy and License Management. The free tier offers a limited privacy and cookie policy as well as cookie banners
  • Cookiefirst - Cookie banner, auditing and multilingual license management solution. The free tier offers a one-time scan and a single banner
  • Ketch - Consent Management and Privacy Framework Tool. The free tier offers most features, but has a limited number of visitors.

[Miscellaneous]

  • Smartcar API - API for car positioning, obtaining fuel tank, battery level, odometer, unlocking/locking doors, etc.
  • Blynk — SaaS with APIs for controlling, building, and evaluating IoT devices. Free developer plan, 5 devices, free cloud and data storage. Mobile apps are also available
  • Bricks Note Calculator - Note-taking app (PWA) with powerful built-in multiline calculator.
  • Carbon.now.sh - Create and share code snippets in a beautiful screenshot format. Commonly used to share/show off code snippets aesthetically on Twitter or blog posts.
  • Code Time - An extension of time tracking and coding metrics in VS Code, Atom, IntelliJ, Sublime Text, and more.
  • Codepng - Create wonderful snapshots from your source code that you can share on social media
  • ConfigCat - Cross-platform feature flagging service. SDKs for all major languages. The free plan has up to 10 logos, 2 environments, 1 product, and 500 million requests per month. Unlimited user seats. Students receive 100 flags and 1 million requests per month for free.
  • datelist.io - Online booking/appointment scheduling system. Reservations can be made free for up to 5 times per month, including 1 calendar
  • docsapp.io — The easiest way to publish documentation, offering free open source
  • Elementor — WordPress website creator. The free package offers more than 40 basic gadgets
  • Form2Channel — Place a static html form on your website and receive contributions directly from Google Sheet, email, Slack, Telegram, or http. No coding is required
  • FOSSA - Scalable end-to-end management of third-party code, license compliance, and vulnerabilities
  • fullcontact.com — Help your users learn more about their contacts by adding social profiles to your application. 500 free human API matches per month
  • http2.pro — HTTP/2 protocol readiness testing and client-side HTTP/2 support detection API.
  • JWT Decoder — An online free tool for decoding JWT (JSON Network Token) and verifying its signature.
  • Base64 decoder/encoder — Tools for decoding and encoding data online and free.
  • newreleases.io - Receive notifications about new releases from GitHub, GitLab, Bitbucket, Python PyPI, Java Maven, Node, email for new releases, Slack, Telegram, Discord, and custom webhooks. js NPM, node. js yarn, Ruby gems, PHP package. Net NuGet, Rust Cargo, and Docker Hub.
  • PDFMonkey — Manage PDF templates in dashboards, call APIs using dynamic data, and download PDFs. 1000 free documents per month.
  • QuickType.io - Quickly generate models/classes/types/interfaces and serializers from JSON, schema, and GraphQL to quickly and securely process data in any programming language. Convert JSON into gorgeous, type-safe code in any language.
  • ray.so - Create beautiful images of code snippets.
  • readme.com — Beautiful documentation is easy to make, open source and free.
  • redirection.io — SaaS tool for managing HTTP redirects for business, marketing, and SEO.
  • redirect.pizza - Easily manage redirects using HTTPS support. The free plan includes 10 sources and 10,<> hits per month.
  • ReqBin — Post HTTP requests online. Common request methods include GET, POST, PUT, DELETE, and HEAD. Header and token authentication is supported. Includes a basic login system for saving requests.
  • superfeedr.com — Real-time PubSubHubbub compatible feeding, export, and analysis. Free, less customization
  • SurveyMonkey.com — Create an online survey. Analyze the results online. The “free plan” only allows 10 questions and 100 answers per survey.
  • videoinu — Create and edit screen recordings and other videos online.
  • RandomKeygen - A free mobile-friendly tool that provides a variety of randomly generated keys and passwords that you can use to protect any application, service, or device
  • Cronhooks - Replace cron jobs with webhooks. Call any webhook at a given datetime or reuse cron expressions. The free plan allows 1 webhook plan.
  • Hook Relay - Add webhook support to your application without the hassle: queuing, fallback retries, and logins. The free plan has 100 deliveries per day, 14 days of retention, 3 hook endpoints
  • Format Express - Instant online formatter for JSON/XML/SQL

[Remote Desktop Tools]

  • Getscreen.me — 2 devices are free with no limit on the number and duration of sessions
  • Apache Guacamole™ — Open source clientless remote desktop gateway

[Other Free Resources]

  • get.localhost.direct — A better *.localhost.direct wildcard public CA-signed SSL certificate for localhost development with subdomain support
  • eu.org — Free eu.org domain. Requests are typically approved within 14 days.
  • js.org - Free js.org subdomain of GitHub Pages for the JavaScript community.
  • pp.ua — Free pp.ua subdomains.
  • Framacloud — A list of free/free open source software and SaaS provided by Framasoft, a French non-profit organization.
  • getawesomeness — Retrieve all the amazing content from GitHub… A must-see
  • github.com — FOSS for Dev — a free and open-source software hub for developers.
  • GitHub Education — A collection of free services for students. Registration required.
  • is-a.dev — Free subdomain for developers..is-a.dev
  • Microsoft 365 Developer Program – Get the free sandbox, tools, and other resources you need to build solutions for the Microsoft 365 platform. The subscription is a 90-day Microsoft 365 E5 subscription (excluding Windows) that is renewable. If you are actively involved in development (measurements using telemetry data and algorithms), it will renew.
  • RedHat for developers — Free access to Red Hat products, including RHEL, OpenShift, CodeReady, and more for developers. Individual plan only. Free eBooks are also available for reference.
  • smsreceivefree.com — Provide free temporary and disposable phone numbers.
  • simplebackups.io — Backup automation services for servers and databases (MySQL, PostgreSQL, MongoDB), stored directly in cloud storage providers (AWS, DigitalOcean, Backblaze, etc.). Free plan with 1 backup.
  • SnapShooter — Backup solutions for DigitalOcean, AWS, LightSail, Hetzner, and Exoscale that support direct backup of databases, file systems, and applications to s3-based storage. A free plan that provides daily backups of one resource.
  • thedev.id — Free thedev.id subdomain for developers.
  • Theme Election — A selection of high-quality, modern designs, professional and easy-to-use free admin dashboard templates, HTML themes, and UI toolkits to create your apps faster!
  • Web.Dev – This is a free tool that allows you to see your website’s performance and improve SEO in order to get higher ranking listings in search engines.
  • SmallDev.tools — Free tool for developers that allows you to encode/decode various formats, minify HTML/CSS/Javascript, beautify, generate fake/test real, such as JSON/CSV and many other formats of datasets and much more. Has a pleasant interface.