Code & Development

Source Code Repos

• Bitbucket - Unlimited public and private Git repos for up to 5 users with Pipelines for CI/CD
• Codeberg - Unlimited public and private Git repos for free and open-source projects (with unlimited collaborators). Powered by [Forgejo](https://forgejo.org/). Static website hosting with [Codeberg Pages](https://codeberg.page/). CI/CD hosting with [Codeberg's CI](https://docs.codeberg.org/ci/). Translating hosting with [Codeberg Translate](https://translate.codeberg.org/). Includes Package and Container hosting, Project management, and Issue Tracking
• framagit.org - Framagit is the software forge of Framasoft based on the Gitlab software includes CI, Static Pages, Project pages and Issue tracking.
• GitGud - Unlimited private and public repositories. Free forever. Powered by GitLab & Sapphire. Includes CI/CD, Static Hosting, Container Registry, Project Management and Issue Tracking.
• GitHub - Unlimited public repositories and unlimited private repositories (with unlimited collaborators). Includes CI/CD, Development Environment, Static Hosting, Package and Container hosting, Project management and AI Copilot
• gitlab.com - Unlimited public and private Git repos with up to 5 collaborators. Includes CI/CD, Static Hosting, Container Registry, Project Management and Issue Tracking
• heptapod.net - Heptapod is a friendly fork of GitLab Community Edition providing support for Mercurial
• pijul.com - Unlimited free and open source distributed version control system. Its distinctive feature is based on a sound theory of patches, which makes it easy to learn, use, and distribute. Solves many problems of git/hg/svn/darcs.
• projectlocker.com - One free private project (Git and Subversion) with 50 MB of space
• RocketGit - Repository Hosting based on Git. Unlimited Public and private repositories.
• savannah.gnu.org - Serves as a collaborative software development management system for free Software projects (for GNU Projects)
• savannah.nongnu.org - Serves as a collaborative software development management system for free Software projects (for non-GNU projects)

Code Generation

• Appinvento - A free no-code app builder. It provides complete access to the automatically generated backend source code and allows for unlimited APIs and routes. The free plan includes three projects and five tables.
• DhiWise - Converts Figma designs into dynamic Flutter and React applications. Its code generation technology is designed to optimize workflows for building production-ready mobile and web experiences.
• Karbon Sites - An AI-powered site builder and editor that generates production-ready frontend code from text prompts, sketches, or resumes. Features include native Android (APK) export and a free tier with 5 generations per month (unlimited via custom Gemini API key).
• Metalama - A C#-specific tool that generates boilerplate code on the fly during compilation to keep source code clean. It is free for open-source projects; its commercial-friendly free tier includes up to three aspects.
• Supermaven - A high-speed AI code completion plugin for VS Code, JetBrains, and Neovim. The free tier provides unlimited inline completions with a focus on ultra-low latency.
• v0.dev - Created by Vercel, v0 generates copy-and-paste friendly React code using shadcn/ui and Tailwind CSS. It uses a credit system, providing 1,200 starting credits and 200 free credits monthly.

Code Quality

• beanstalkapp.com - A complete workflow to write, review, and deploy code), a free account for one user, and one repository with 100 MB of storage
• codacy.com - Automated code reviews for PHP, Python, Ruby, Java, JavaScript, Scala, CSS, and CoffeeScript, free for unlimited public and private repositories
• Codeac.io - Automated Infrastructure as Code review tool for DevOps integrates with GitHub, Bitbucket, and GitLab (even self-hosted). In addition to standard languages, it also analyzes Ansible, Terraform, CloudFormation, Kubernetes, and more. (open-source free)
• codecov.io - Code coverage tool (SaaS), free for Open Source and one free private repo
• CodeFactor - Automated Code Review for Git. The free version includes unlimited users, public repositories, and one private repo.
• coderabbit.ai - AI-powered code review tool that integrates with GitHub/GitLab. Free tier includes 200 files/hour, 3 reviews per hour, and 50 conversations/hour. Free forever for open source projects.
• CodSpeed - Automate performance tracking in your CI pipelines. Catch performance regressions before deployment, thanks to precise and consistent metrics. Free forever for Open Source projects.
• coveralls.io - Display test coverage reports, free for Open Source
• deepscan.io - Advanced static analysis for automatically finding runtime errors in JavaScript code, free for Open Source
• DeepSource - DeepSource continuously analyzes source code changes, finding and fixing issues categorized under security, performance, anti-patterns, bug-risks, documentation, and style. Native integration with GitHub, GitLab, and Bitbucket.
• DiffText - Instantly find the differences between two blocks of code. Completely free to use.
• eversql.com - EverSQL - The #1 platform for database optimization. Gain critical insights into your database and SQL queries automatically.
• gerrithub.io - Gerrit code review for GitHub repositories for free
• goreportcard.com - Code Quality for Go projects, free for Open Source
• gtmetrix.com - Reports and thorough recommendations to optimize websites
• holistic.dev - The #1 static code analyzer for Postgresql optimization. Performance, security, and architect database issues automatic detection service
• houndci.com - Comments on GitHub commits about code quality, free for Open Source
• reviewable.io - Code review for GitHub repositories, free for public or personal repos.
• scan.coverity.com - Static code analysis for Java, C/C++, C# and JavaScript, free for Open Source
• scrutinizer-ci.com - Continuous inspection platform, free for Open Source
• semanticdiff.com - Programming language aware diff for GitHub pull requests and commits, free for public repositories
• shields.io - Quality metadata badges for open source projects
• sonarcloud.io - Automated source code analysis for Java, JavaScript, C/C++, C#, VB.NET, PHP, Objective-C, Swift, Python, Groovy and even more languages, free for Open Source

Code Search and Browsing

• CodeKeep - Google Keep for Code Snippets. Organize, Discover, and share code snippets, featuring a powerful code screenshot tool with preset templates and a linking feature.
• libraries.io - Search and dependency update notifications for 32 different package managers, free for open source
• Namae - Search various websites like GitHub, Gitlab, Heroku, Netlify, and many more for the availability of your project name.
• tickgit.com - Surfaces `TODO` comments (and other markers) to identify areas of code worth returning to for improvement.

CI and CD

• appcircle.io - An enterprise-grade mobile DevOps platform that automates the build, test, and publish store of mobile apps for faster, efficient release cycle. Free for 30 minutes max build time per build, 20 monthly builds and 1 concurrent build.
• appveyor.com - CD service for Windows, free for Open Source
• bitrise.io - A CI/CD for mobile apps, native or hybrid. With 200 free builds/month 10 min build time and two team members. OSS projects get 45 min build time, +1 concurrency and unlimited team size.
• buddy.works - A CI/CD with five free projects and one concurrent run (120 executions/month)
• Buildkite - CI Pipelines free for 3 users and 5k job minutes/month. Test Analytics free developer tier includes 100k test executions/month, with more free inclusions for open-source projects.
• bytebase.com - Database CI/CD and DevOps. Free under 20 users and ten database instances
• CircleCI - Comprehensive free plan with all features included in a hosted CI/CD service for GitHub, GitLab, and BitBucket repositories. Multiple resource classes, Docker, Windows, Mac OS, ARM executors, local runners, test splitting, Docker Layer Caching, and other advanced CI/CD features. Free for up to 6000 minutes/month execution time, unlimited collaborators, 30 parallel jobs in private projects, and up to 80,000 free build minutes for Open Source projects.
• cirrus-ci.org - Free for public GitHub repositories
• cirun.io - Free for public GitHub repositories
• codemagic.io - Free 500 build minutes/month
• deployhq.com - 1 project with ten daily deployments (30 build minutes/month)
• LocalOps - Deploy your app on AWS/GCP/Azure in under 30 minutes. Setup standardised app environments on any cloud, which come with in-built continuous deployment automation and advanced observability. The free plan allows 1 user and 1 app environment.
• Make - The workflow automation tool lets you connect apps and automate workflows using UI. It supports many apps and the most popular APIs. Free for public GitHub repositories, and free tier with 100 Mb, 1000 Operations, and 15 minutes of minimum interval.
• Mergify - workflow automation and merge queue for GitHub - Free for public GitHub repositories
• Nx Cloud - Nx Cloud speeds up your monorepos on CI with features such as remote caching, distribution of tasks across machines and even automated splitting of your e2e test runs. It comes with a free plan for up to 30 contributors with generous 150k credits included.
• RunMyJob - Run GitHub Actions and GitLab CI pipelines smarter with real-time scaling Spike Instances. Free tier includes 400 vCPU-minutes, 800 GB-minutes, and 10 concurrent jobs with high-performance runners (12 vCPU and 32 GB RAM per job).
• Shipfox - Run your GitHub actions 2x faster, 3.000 build minutes free each month.
• Spacelift - Management platform for Infrastructure as Code. Free plan features: IaC collaboration, Terraform module registry, ChatOps integration, Continuous resource compliance with Open Policy Agent, SSO with SAML 2.0, and access to public worker pools: up to 200 minutes/month
• Squash Labs - creates a VM for each branch and makes your app available from a unique URL, Unlimited public & private repos, Up to 2 GB VM Sizes.
• Terramate - Terramate is an orchestration and management platform for Infrastructure as Code (IaC) tools such as Terraform, OpenTofu, and Terragrunt. Free up to 2 users including all features.
• Terrateam - GitOps-first Terraform automation with pull request-driven workflows, project isolation via self-hosted runners, and layered runs for ordered operations. Free for up to 3 users.

Low-code Platform

• appsmith - Low code project to build admin panels, internal tools, and dashboards. Integrates with 15+ databases and any API.
• BudiBase - Budibase is an open-source low-code platform for creating internal apps in minutes. Supports PostgreSQL, MySQL, MSSQL, MongoDB, Rest API, Docker, K8s
• Clappia - A low-code platform designed for building business process applications with customizable mobile and web apps. Offers a drag-and-drop interface, features like Offline Support, real-time location tracking and integration with various third-party services
• lil'bots - write and run scripts online utilizing free built-in APIs like OpenAI, Anthropic, Firecrawl and others. Great for building AI agents / internal tooling and sharing with team. Free-tier includes full access to APIs, AI coding assistant and 10,000 execution credits / month.
• manubes - Powerful no-code cloud platform with a focus on industrial production management. Free for one user with 1 million workflow activities a month ([also available in german](https://www.manubes.de)).
• Mendix - Rapid Application Development for Enterprises, unlimited accessible sandbox environments supporting total users, 0.5 GB storage and 1 GB RAM per app. Also, Studio and Studio Pro IDEs are allowed in the free tier.
• outsystems.com - Enterprise web development PaaS for on-premise or cloud, free "personal environment" offering allows for unlimited code and up to 1 GB database
• ReTool - Low-code platform for building internal applications. Retool is highly hackable. If you can write it with JavaScript and an API, you can make it in Retool. The free tier allows up to five users per month, unlimited apps and API connections.
• ToolJet - Extensible low-code framework for building business applications. Connect to databases, cloud storages, GraphQL, API endpoints, Airtable, etc., and build apps using drag-and-drop application builder.
• UI Bakery - Low-code platform that enables faster building of custom web applications. Supports building UI using drag and drop with a high level of customization through JavaScript, Python, and SQL. Available as both cloud and self-hosted solutions. Free for up to 5 users.

Package Build System

• build.opensuse.org - Package build service for multiple distros (SUSE, EL, Fedora, Debian, etc.).
• copr.fedorainfracloud.org - Mock-based RPM build service for Fedora and EL.
• help.launchpad.net - Ubuntu and Debian build service.

IDE and Code Editing

• Android Studio - Android Studio provides the fastest tools for building apps on every type of Android device. Open Source IDE is free for everyone and the best Android app development. Available for Windows, Mac, Linux, and even ChromeOS!
• AndroidIDE - An Open Source IDE to develop real, Gradle-based Android applications on Android devices.
• Apache Netbeans - Development Environment, Tooling Platform and Application Framework.
• apiary.io - Collaborative design API with instant API mock and generated documentation (Free for unlimited API blueprints and unlimited users with one admin account and hosted documentation).
• BBEdit - BBEdit is a popular and extensible editor for macOS. Free Mode provides a [powerful core feature set](https://www.barebones.com/products/bbedit/comparison.html) and an upgrade path to advanced features.
• Binder - Turn a Git repo into a collection of interactive notebooks. It is a free public service.
• BlueJ - A free Java Development Environment designed for beginners, used by millions worldwide. Powered by Oracle & simple GUI to help beginners.
• Brackets - Brackets is an open-source text editor specifically designed for web development. It is lightweight, easy to use, and highly customizable.
• cacher.io - Code snippet organizer with labels and support for 100+ programming languages.
• cocalc.com - Collaborative calculation in the cloud. Browser access to full Ubuntu with built-in collaboration and lots of free software for mathematics, science, data science, preinstalled: Python, LaTeX, Jupyter Notebooks, SageMath, scikitlearn, etc.
• Code::Blocks - Free Fortran & C/C++ IDE. Open Source and runs on Windows,macOS & Linux.
• codiga.io - Coding Assistant that lets you search, define, and reuse code snippets directly in your IDE. Free for individual and small organizations.
• Components.studio - Code components in isolation, visualize them in stories, test them, and publish them on npm.
• Eclipse Che - Web-based and Kubernetes-Native IDE for Developer Teams with multi-language support. Open Source and community-driven. An online instance hosted by Red Hat is available at [workspaces.openshift.com](https://workspaces.openshift.com/).
• ForgeCode - AI-enabled pair programmer for Claude, GPT4 Series, Grok, Deepseek, Gemini and all frontier models. Works natively with your CLI and integrates seamlessly with any IDE. Free tier includes basic AI model access with local processing.
• GetVM - Instant free Linux and IDEs chrome sidebar. The free tier includes 5 VMs per day.
• JDoodle - Online compiler and editor for more than 60 programming languages with a free plan for REST API code compiling up to 200 credits per day.
• jetbrains.com - Productivity tools, IDEs and deploy tools (aka [IntelliJ IDEA](https://www.jetbrains.com/idea/), [PyCharm](https://www.jetbrains.com/pycharm/), etc). Free license for students, teachers, Open Source and user groups.
• JSONPlaceholder - Some REST API endpoints that return some fake data in JSON format. The source code is also available if you would like to run the server locally.
• Lazarus - Lazarus is a Delphi-compatible cross-platform IDE for Rapid Application Development.
• MarsCode - A free AI-powered cloud-based IDE.
• micro-jaymock - Tiny API mocking microservice for generating fake JSON data.
• mockable.io - Mockable is a simple configurable service to mock out RESTful API or SOAP web services. This online service allows you to quickly define REST API or SOAP endpoints and have them return JSON or XML data.
• mockaroo - Mockaroo lets you generate realistic test data in CSV, JSON, SQL, and Excel formats. You can also create mocks for back-end API.
• Mocklets - an HTTP-based mock API simulator that helps simulate APIs for faster parallel development and more comprehensive testing, with a lifetime free tier.
• OneCompiler - Free online compiler supporting 70+ languages including Java, Python, C++, JavaScript.
• OnlineGDB - A free online ide thats supports 40+ languages and is pre installed with tons of libraries; and also has a debugging option, flags, tutorials, and a QNA page!
• Paiza - Develop Web apps in Browser without needing to set up anything. Free Plan offers one server with 24 24-hour lifetime and 4 hours of running time per day with 2 CPU cores, 2 GB RAM, and 1 GB storage.
• PHPSandbox - Online development environment for PHP
• pterocos - a free opensource browser-based coding environment for front-end developers. write html, css and js with a vs code-grade editor (monaco), live preview, scss/typeScript/babel support, and an ai chat assistant for debugging and suggestions. all projects save to local storage. free forever – no account needed.
• Replit - A cloud coding environment for various program languages.
• RunMat - GPU-accelerated numerical computing IDE in the browser. Write and run MATLAB-syntax .m files with automatic GPU acceleration via WebAssembly and WebGPU. No install, no account, no license fees. Open source runtime with CLI, NPM package, and Jupyter kernel support.
• SoloLearn - A cloud programming playground well-suited for running code snippets. Supports various programming languages. No registration is required for running code, but it is necessary when saving code on their platform. Also offers free courses for beginners and intermediate-level coders.
• stackblitz.com - Online/Cloud Code IDE to create, edit, & deploy full-stack apps. Support any popular NodeJs-based frontend & backend frameworks. Shortlink to create a new project: [https://node.new](https://node.new).
• Sublime Text - Sublime Text is a popular, versatile, and highly customizable text editor used for coding and text editing tasks.
• Visual Studio Code - Code editor redefined and optimized for building and debugging modern web and cloud applications. Developed by Microsoft.
• Visual Studio Community - Fully-featured IDE with thousands of extensions, cross-platform app development (Microsoft extensions available for download for iOS and Android), desktop, web and cloud development, multi-language support (C#, C++, JavaScript, Python, PHP and more).
• VSCodium - Community-driven, without telemetry/tracking, and freely-licensed binary distribution of Microsoft’s editor VSCode
• wakatime.com - Quantified self-metrics about your coding activity using text editor plugins, limited plan for free.
• Wave Terminal - Wave is an open-source, cross-platform terminal for seamless workflows. Render anything inline. Save sessions and history. Powered by open web standards. MacOS and Linux.

Docker Related

• Container Registry Service - Harbor based Container Management Solution. The free tier offers 1 GB of storage for private repositories.
• Docker Hub - One free private repository and unlimited public repositories to build and store Docker images
• Play with Docker - A simple, interactive, fun playground to learn Docker.
• quay.io - Build and store container images with unlimited free public repositories
• ttl.sh - Anonymous & ephemeral Docker image registry