Product Overview: 

Redmine is a flexible project management web application. Written using Ruby on Rails framework, it is cross-platform and cross-database. Redmine is open source and released under the terms of the GNU General Public License v2 (GPL).

Below are some of the main features of Redmine.
•Multiple projects and subproject 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

Try it now!