A list of Free and open-source software for developers

Feel free to send a PR :)

free for dev - A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

free-for-dev-zh - A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to Chinese devops and infradev

awesome - A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

• Source Code Repos
• IDE
• Collaboration Tools
• Code Quality
• CI / CD
• Security and PKI
• Bug trackers
• Project management
• PaaS
• Documentation
• ADN(Application Delivery Networking)
• EMT(Environment Manager Tools)

• Gogs - A painless self-hosted Git Service
• GitLab - Version control for your server
• Package Drone - A package manager repository for OSGi, Java and more

• Atom - Opensource,fully-featured,hackable text editor for coding.
• Visual Studio Code - 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 - Fully FOSS alternative to vscode
• Coding WebIDE - The Coding WebIDE Community Edition project
• CodeBox - Open source cloud & desktop IDE
• Brackets - A modern and open-source code editor for HTML, CSS and JavaScript.

• Bat - The fancy cat with syntax highlighting and effortless fuzzy searching to save development time.
• Clifm - The terminal is always in your reach when managing your files.
• Clipboard - Cut, copy, and paste anything, anywhere, anytime, all from the terminal.
• fzf - Fuzzy find anything in your directories.

• Filestash - A Dropbox-like web client where users can bring their own backend (FTP, SFTP, Webdav, S3, Minio, ...).
• SparkleShare - An Open Source collaboration and sharing tool
• ssh chat - Chat over SSH
• lets chat - Self-hosted chat app for small teams
• ownCloud - Open Source file sync & share, with calendar, contacts and more apps
• Tolgee - Developer & translator friendly web-based localization platform

• sonarqube - Put your technical debt under control
• gerrit - Code Review
• Codecov - Continuous Code Coverage

• Jenkins - open-source continuous integration server
• Travis CI - Free continuous integration platform for GitHub projects
• cucumber - Simple, human collaboration
• drone.io - Open Source CI platform
• Gitlab CI - Gitlab Ci

• Unleash - Free open-source feature flag & toggle service. SDKs for all major languages.

• Ralasafe - Access Control Middleware
• OpenXPKI - an enterprise-grade PKI/Trustcenter software
• Selefra - An open-source policy-as-code software that provides analytics for multi-cloud and SaaS.

• Bugzilla - web-based bug-tracking software
• Mantis - issue tracker that provides a delicate balance between simplicity and power
• Trac - IT project management solution that enables software developers to track and address bugs, tasks, files, wiki pages, and more.
• Open Project - Project management platform (has features like jira and confluence)

• Redmine - a flexible project management web application written using Ruby on Rails
• Phabricator - an open source collection of web applications which help software companies build better software
• Taiga.io - Your Agile, Free and Open Source Project Management Tool

• Preevy - Provision preview environments for docker compose applications with minimal configuration
• OpenShift - build, deploy, and manage your applications with Docker and Kubernetes
• Zeabur - deploy your full stack apps and databases with one click

• Log4brains - Docs-as-code knowledge base to manage Architecture Decision Records (ADR) for your project and publish them automatically as a static website

• Hook0 Webhooks-as-a-service (WaaS) for developers to send and manage webhooks
• Okteto - Kubernetes and Docker Compose Platform
• Dokku - Heroku like environment
• Keploy - A developer-centric backend testing tool which makes backend tests with built-in-mocks, faster than unit tests, from user traffic

• Matrix - Decentrialized End-to-End Encrypted Chat platform (you may want to use Element
• Discourse - Community forum
• Flarum - Community Forum (PHP based)

• Mailcow Email Server - Fully feature email server (for avarage use cases @lmtr0 recommends this one)
• WildDuck Email Server - nodejs application to send emails (built for scale (needs more hand work to make it work)

• DEM - DEM (Development Environment Manager) is an open source command line tool to manage containerized Development Environments.