A modern, minimalist, extensible chat bot.
NOTICE: We're not on SourceForge anymore. See http://autoproj.org for our new domain. Auto is modern, simple, and smart automated bot software, designed per a philosophy of minimalism, simplicity, usability, cleanliness, and easy extensibility. It has support for IRC (v3.1) with planned support for XMPP. It can be easily extended by means of its plugin API, and offers a host of features. It is known to function on any OS on which Ruby 1.9 functions (such as Linux, Mac OS X, BSD, Microsoft Windows, etc.).
Chipz.IRC is an easy to use IRC library with SSL support. It's written in C# for the .NET framework.
A remake of the original BNX Chatterbot for IRC
IRCBNX Chatterbot is a moderation IRC bot written in C++ and based on the original Battle.net text gateway bot BNX Chatterbot. Like the original, it features a rule-based response system, an access system, and several moderation features.