Virtual Reality Chat (VRC) is developed using a framework (Yaf3D) which combines robust software libraries such as OpenScenegraph, Lua, ReplicaNet, and more. VRC provides text and voice chat in a 3D environment. YAG 2002 project is their home.
BoomBot is a developer's framework for writing a bot connecting to the AIM network. It manages the network communication for the bots so that they can be easily written without worrying about AIM itself at all. Bots can be written in Objective-C or Lua.