Flyspray is an uncomplicated, web-based bug tracking system written in PHP for assisting with software development. It was originally conceived when the Psi Jabber client project couldn't find a bugtracker that suited their needs, and has been made available for everyone to use for their own projects. Flyspray is released under the GNU Lesser General Public License Version 2.1.
Version : 0.9.9.7
Web-based, platform-independent
Multiple database support, currently MySQL and PGSQL
Easy installation
Easy to use
Multiple projects
'Watching' tasks, with notification of changes
Comprehensive task history
File attachments
CSS Themes
Advanced search features (though easy to use)
Atom/RSS feeds
Two syntax options for task descriptions and more (Dokuwiki / plain text)