Redmine

Redmine is a flexible project management web application written in Ruby on Rails. It provides a comprehensive set of features for tracking projects, issues, and time across multiple teams and projects.

What it does

Redmine offers multi-project support with flexible role-based access control. It includes issue tracking with custom fields, Gantt charts for project visualization, and a calendar view. Each project gets its own wiki and forums for documentation and discussion. Time tracking capabilities allow teams to log hours against issues and projects.

The platform integrates with major version control systems including SVN, CVS, Git, Mercurial, Bazaar, and Darcs. Issues can be created via email, and the system supports multiple LDAP authentication sources for enterprise environments.

Deployment options

Redmine can be deployed on-premises or in private cloud environments. It supports multiple databases including MySQL, PostgreSQL, and SQLite. Being a Ruby on Rails application, it can run on most Unix/Linux systems, Windows, and macOS. Docker images and Bitnami installers are available for simplified deployment.

Limitations

• User interface uses traditional server-rendered pages without modern JavaScript frameworks, which can feel dated compared to contemporary alternatives
• Plugin ecosystem is extensive but quality varies significantly; some plugins may not be maintained or compatible with newer Redmine versions
• Mobile experience relies on responsive design rather than native apps, limiting on-the-go usability
• Email integration requires careful configuration of mail server settings and may need troubleshooting in enterprise environments
• Scaling to very large installations (thousands of users) requires database and application server tuning that is not well-documented
• Migration from other tools (Mantis, Trac) is supported via rake tasks but these are deprecated as of recent versions