@phpdeveloper.org
Greg Beaver, frustrated with the bug tracker offerings out there, has taken the pearweb bug tracking system and modified it for use on his main project - the Chiara_PEAR_Server - as a bugtracker/timeline system.
The code distinguishes itself from other bug tracking tools in that (assuming you have a running install of Chiara_PEAR_Server) setting it up involves just 6 steps.
That's all that's needed ot have a fully functioning bug tracker that automatically tracks both packages and releases as they are made in Chiara_PEAR_Server, understands developers directly from Chiara_PEAR_Server, separates HTML output from backend processing, allowing templating, has simple and elegant roadmap mechanism for defining release strategies, and assigning specific bugs to future releases
You can grab a download of this project directly from the PEAR website and follow Greg's six simple steps to get it up and running.