This is part of the PCCE project.
We have chosen Jabber as the underlying architecture for our chat and presence services. Jabber is an open source project that has been gaining momentum in the community. Jabber already has many more features than our old IRC chat and is robust. We are running a server that we maintain for users. We use this server as the basis for our experimentation and development of PCCE features. PCCE-JT uses the Jabber messaging protocol for near-real-time chatting between users.