Redmine

Redmine provides a web‑based environment for managing multiple software projects, offering issue tracking, Gantt charts, calendars, wikis, and forums within each project. It supports role‑based access control, custom fields for issues, time entries, projects and users, and email notifications, allowing teams to tailor visibility and workflow to their needs. Integration with version‑control systems such as Git, Subversion, Mercurial, CVS and Bazaar lets users link commits to issues, while time‑tracking features record effort per task.

The application is built on Ruby on Rails, making it cross‑platform and compatible with various databases, and it can be self‑hosted without subscription fees. It includes LDAP authentication, user self‑registration, multilingual interfaces, and per‑project feeds. Documentation covers both user and developer guides, and a public demo site lets newcomers explore its administration features.

Redmine is released under GPL‑2.0 and maintained by a volunteer community, with support channels including forums, IRC, and Slack. Its extensibility is enhanced by plugins and themes contributed by users.