Forgive my long absence, been so busy with work and other projects that I haven't really taken the time to update. I really need to find a better way to remedy that.
For now, though, the homegrown project of 'gheibot' has, erm, "matured" into
whatbot. Designed as our IRC channel's replacement for infobot, we're looking to expand its appeal and get a few more eyes on it as it actually starts working. It's currently written in OO perl5, on top of Net::IRC, and communicates with SQLite, PostgreSQL, and MySQL. Designed to be rather IO and database agnostic, in theory, it can be adapted to protocols such as AIM, or other databases such as BDB or Microsoft SQL Server.
As of right now, there is a basic extension system, and attempts to duplicate the basic learning and karma capabilities of infobot. Needless to say, it has a while to go.