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"TRAC" redirects here. For other uses, see TRAC (disambiguation).
Trac logo.svg
Trac screenshot.png
Developer(s) Edgewall Software
Initial release October 1, 2006; 9 years ago (2006-10-01)
Stable release 1.0.9 (September 10, 2015; 2 months ago (2015-09-10)) [±][1]
Preview release 1.1.6 (July 17, 2015; 4 months ago (2015-07-17)) [±][2]
Written in Python
Type Project management software, bug tracking system
License Modified BSD license

Trac is an open source, Web-based project management and bug tracking system. The program is inspired by CVSTrac, and was originally named svntrac due to its ability to interface with Subversion.[3] It is developed and maintained by Edgewall Software.

Trac is written in the Python programming language. Until mid-2005, it was available under the GNU General Public License; since version 0.9, it has been released under a modified BSD license.[4]


Trac allows hyperlinking information between a bug database, revision control and wiki content. It also serves as a Web interface to the following revision control systems: Subversion, Git, Mercurial, Bazaar, Perforce and Darcs. Prior to version 0.11, the web front end presentation of Trac was handled by the ClearSilver template system. Starting with 0.11, an in-house template system called Genshi is used, although compatibility with ClearSilver-based plugins will remain for several versions.[5]

Other features include:

  • Project management (Roadmap, Milestones, etc.)
  • Account Manager[6]
  • Ticket system (bug tracking, tasks, etc.)
  • Search engine for tickets
  • Email notifications
  • Fine-grained permissions (since 0.11)
  • Timeline of all recent activity
  • Wiki (syntax similar to MoinMoin)
  • Customized reporting
  • version control system Web interface
  • RSS feeds
  • Multiple project support (planned for post-1.0 versions)[7][8]
  • Environment extensibility (via Python plugins)
  • iCalendar export[9]
  • Multiple repository Support per environment (since 0.12)
  • Interface localizations (since 0.12)
  • Spam-Filtering[10]
  • Support for plugins[11][12]
  • Blog Plugin
  • Discussion/Forum plugin
  • Guestbook plugin
  • Pastebin plugin[13]
  • Support for SVN and Git and plugins for Mercurial, Bazaar, Darcs, Perforce, Monotome and CVS


Trac is reported to have more than 450 major installations worldwide.[14] Among the users of Trac are Tor[15] and I2P[16] projects, NASA's Jet Propulsion Laboratory, which reports that it uses this tool to manage various deep space and near space projects; Twisted, an asynchronous networking framework implemented in Python; the Dojo Toolkit, one of the popular Open source JavaScript library projects; Nginx, an open source Web server and a reverse proxy server; Piwik, a free software equivalent to services like Google Analytics; and WordPress, the popular blogging platform. They all use Trac for bug tracking and as a source tree viewer. Some projects also use Trac's wiki. The Apache Bloodhound project is a fork of Trac.[citation needed]


  1. ^ RELEASE in tags/trac-1.0.9 - The Trac Project,, September 10, 2015 
  2. ^ RELEASE in tags/trac-1.1.6 - The Trac Project,, July 17, 2015 
  3. ^ "Trac and Subversion". Edgewall Trac. Retrieved May 19, 2008. 
  4. ^ "TracLicense - The Trac Project". Edgewall Trac. Retrieved March 6, 2007. 
  5. ^ "ClearSilver - The Trac Project". Edgewall Trac. January 27, 2007. Retrieved February 6, 2007. 
  6. ^
  7. ^
  8. ^
  9. ^ "The Trac Roadmap". Edgewall Trac. Retrieved September 14, 2009. 
  10. ^
  11. ^
  12. ^
  13. ^
  14. ^ "Who uses Trac?". Edgewall Trac. June 25, 2008. Retrieved June 25, 2008. 
  15. ^
  16. ^

See also[edit]

External links[edit]