Frivolity
Frivolity is a collection of Perl modules (using the
Volity namespace) intended as a reference implementation
of the Volity protocol and archetechture for Internet-based game
playing.
Currently, the best I can do is point you at Volity's page on SourceForge, where you will find the latest news, and code releases of this project, as well as a browsable SVN tree, and mailing lists.