iThink SW has a new really-Alpha-ish IRC client out. Their forums is the best place to find the daily builds and what not (which haven't been updated for just a bit). The CVS build, last I tried it, ...
I tried to search for this several times, to no avail. I'm looking for a decent OSX IRC client. The last time I tried to use irc on a mac was probably seven or eight years ago, so I have no idea ...