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  1. GitHub is a web-based hosting service for projects that use the Git revision control system. It is written in Ruby on Rails by Logical Awesome developers Chris Wanstrath, PJ Hyett, and Tom Preston-Werner.

  2. Gitea is a community managed fork of Gogs, lightweight code hosting solution written in Go and published under the MIT license.



  3. Code collaboration version control. Offers hosted (freemium) for limited (5) users, and a commercial self-hosted for a subscription. Free licenses are available for qualified open source projects, nonprofits, and classrooms.

  4. Redmine is a flexible project management web application. Written using Ruby on Rails framework, it is cross-platform and cross-database.

  5. OpenProject is an open-source project management software with a wide set of features and plugins. It supports project timelines / Gantt charts, issue tracking, wiki, document management, time and cost reporting, code management, Scrum and much more.

  6. Codeberg is a free Git source code hosting service, with the objective to give the Open-Source code that is running our world a safe and friendly home, and to ensure that free code remains free and secure forever.

  7. Trac is an enhanced wiki and issue tracking system for software development projects. Trac uses a minimalistic approach to web-based software project management. Our mission is to help developers write great software while staying out of the way.

  8. Whether you plan your day, organize a camping trip or lead a work project, Freedcamp is in the center of it all. Our free plan has tasks(in list and kanban view), milestones, discussions, calendar, time-tracking and password management.

  9. A project management tool that can be adapted to your processes to help you deliver great products. Track tasks and bugs, plan sprints and releases, create workflows, and customize YouTrack for your business processes. Never force your process to fit the limits of a tool again.

  10. Tuleap is the first fully libre and open source software (GPL licence) for Enterprise Application Lifecycle Management. Tuleap is provided by the Enalean company and the community members.

  11. Mantis Bug Tracker is a free and open source, web-based bug tracking system. It is written in the PHP scripting language and works with MySQL, MS SQL, and PostgreSQL databases and a webserver. MantisBT can be installed on Windows, Linux, Mac OS, OS/2, and others.

  12. Tracker is a story-based project planning tool from Pivotal Labs that allows teams to collaborate and react to real-world changes instantly. Its based on agile software methods, but can be used on a wide range of projects.

  13. Host open-source software projects using Subversion or Mercurial for revision control. Google Code also includes a wiki for documentation, issue tracking and file download feature.

    Discontinued

    Google Code will be shut down at the end of 2015. See http://google-opensource.blogspot.com/2015/03/farewell-to-google-code.html

  14. Matrify is the middle way between spreadsheets and industry-specific software. Use Matrify to work on tables and lists with your team, e. g.