OtfBot is a modular IRC bot. It has modules to respond to !commands, answer to keywords, post RDF headlines in the channel, kick users of bad words, interact with the user with an A.I. (megahal, SQL), display 8-ball quotes, and much more. New plugins can be created in minutes.
At one point, Open Hub analyzed source code for this project based on code location(s) available at that time. Since then, the code locations have been removed.