Erlang written IRC bot and possibly client
High-level C++ framework to ease game development
OSDL: Object-oriented Simple DirectMedia Layer. OSDL is a high level open source (LGPL/GPL) portable multimedia library, built upon Sam Lantinga's SDL (http://www.libsdl.org). Its goal is to provide a high level C++ framework to ease game development.
XP Dojo is a place where Extreme Programming teams assemble to practice their art.