Trac is a web-based software project management and bug/issue tracking system emphasizing ease of use and low ceremony. It provides an integrated Wiki, an interface to version control systems, and a number convenient ways to stay on top of events and changes within a project.
Trac is distributed under the modified BSD License. The complete text of the license can be found online as well as in the COPYING file included in the distribution.
Please visit the Trac open source project at http://trac.edgewall.org/.