AceProject (Popularity: )
http://www.aceproject.com Offers free web-based software for project management, bug tracking and timesheet management.
Bugzilla (Popularity: )
http://www.bugzilla.org/ Bug tracking used by the Mozilla projects. Inherently web-based, written in Perl, and uses MySQL as its database back-end. Open-Source. ...
Bug-A-Boo (Popularity: )
http://www.bug-a-boo.org/ An open source bug tracking system running on any web server allowing the execution of tdbengine binaries. It is dristributed ...
Trac (Popularity: )
http://trac.edgewall.com/ Trac is a web-based software project management and bug/issue tracking system. It provides an interface to Subversion and an integrated ...