Bugzilla

Bugzilla is a web-based general-purpose bug tracking system and testing tool originally developed and used by the Mozilla project, and licensed under the Mozilla Public License. Released as open-so...
Language(s): Perl
Operating system(s): Cross-platform
License: Mozilla Public License

Mantis Bug Tracker

Mantis Bug Tracker is a free and open source, web-based bug tracking system. The most common use of MantisBT is to track software defects. However, MantisBT is often configured by users to serve as a ...
Language(s): PHP
Operating system(s): Cross-platform
License: GNU General Public License version 2

Mindquarry

Mindquarry is an open source collaborative software geared towards small and medium-sized workgroups. Mindquarry attempts to strike a balance between features and ease-of-use. The application offers f...
Language(s): Java, servlets and JSP
Operating system(s): Cross-platform
License: Mozilla Public License

Redmine

Redmine is a free and open source, web-based project management and issue tracking tool. It allows users to manage multiple projects and associated subprojects. It features per project wikis and forum...
Language(s): Ruby on Rails
Operating system(s): N/A
License: GNU General Public License v2

Trac

Trac is an enhanced wiki and issue tracking system for software development projects. Trac uses a minimalistic approach to web-based software project management. Our mission is to help developers writ...
Language(s): Python
Operating system(s): Windows, OS X, Linux, BSD
License: Modified BSD license