Redmine is a flexible and very popular open source project management software written using Ruby on Rails framework. It Features: * 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