Redmine is a flexible project management web application. Written using Ruby on Rails framework, it is cross-platform and cross-database.
Redmine Features
Below are some of the main features of Redmine:
- Multiple projects support
 - Flexible role based access control
 - Flexible issue tracking system
 - Gantt chart and calendar
 - News, documents & files management
 - Feeds & email notifications
 - Per project wiki
 - Per project forums
 - Time tracking
 - Custom fields for issues, time-entries, projects and users
 - SCM integration (SVN, CVS, Git, Mercurial, Bazaar and Darcs)
 - Issue creation via email
 - Multiple LDAP authentication support
 - User self-registration support
 - Multilanguage support
 - Multiple databases support