CVSTrac's home [L1 ] advertises it as "A Web-Based Bug And Patch-Set Tracking System For CVS". To developers, it offers SCM functionality, layered over CVS. It's roughly comparable to Bonsai.
Key to effective use of CVSTrac is its "timeline" [explain]. This [L2 ] is the live timeline for tktoolkit, which illustrates [explain].
CVSTrac builds in a convenient Wiki. Its reporting facility permits arbitrary SQL queries. It "tickets" [explain] conveniently.