CVS - The Concurrent Versions System, the open-source standard for version control.
Automated build system. CVS commit / watch / tag notification via email, newsgroup, and/or IRC. Console-based file manipulation tools and utilities. XML-based file copy/FTP script. IRC session logger. Synchronize web site with CVS. GPL. Tested on
Cvsplot is a perl script which analyses the history of a CVS-managed project. The script executes on a set of files, analyses their history, and automatically generates graphs that plot lines of code and number of files against time.