PyReferee is a project mainly written in ..., it's free.
Referee for IRC Chat. Uses yellow/red card analogy to perform actions against bad behaving users. Also basic framework for a "pluggable" parsing.
PyReferee - Python IRC Referee Bot http://www.caller9.com
Usage: python pyreferee.py
Configuration: The config/servers.cfg file lists servers and channels to join on those servers.
The config/default_channel.cfg is the base config for any channel listed in servers.cfg. It will be used to create [servername][channel].cfg files which can be customized to the channel in question. Or you can manually copy or create [servername][channel].cfg files. Though this is not recommended because you could omit vital information.
The config system does not fully validate the configuration files, especially the channel config files. For the most part missing configuration values will cause an exception.