Forum OpenACS CMS: Is Chat facility available in Forums?
Can I log the conversations to a file?
Check here http://openacs.org/xowiki/pages/en/chat
I actually came to explore this stuff from a Slashdot link, and the impression I got was this OpenACS is a mature, well-used and tested piece of code. Surprising that a full-features Chat tool is not a part of this.
It has chat rooms, logs, can ban users, etc.
There is an accompanying package, if you use dotlrn.