We've just set up a Java Chat Client for #onlytrivia, it's pretty neat. Probably largely useless, but at least it's there! And for people who would like to play trivia at work, but who's computers won't allow the use of any new software (eg, an IRC client), it's perfect!
It is accessible via the #onlytrivia homepage, and it's probably best to use that link, as it will provide you with all the other links as well as providing a link back to the main page.