I have an very, very old version of RPChat I might give out.
RPChat+, although, I'd like to keep unique to the Bluzone server. it's mostly Lugnut's own work however so if you're super desperate just ask him. Chances are, though, he'll probably tell you to ask me or just say no straight out.
RPChat+ has the features like being able to carry players, the ability for admins to hear everything that's being said, having the chat echo to the console and just being so much less buggy.
The standard RPChat, the one I might consider giving to people if they ask, just has /setname, local chat and radio. It's far less fancy than RPChat+ but is still just as functioning.