Trillian
The first of the utilies is Trillian basic (Thanks to Max for this!)
Trillian is a multi protocol Instant Message client. It connects to AIM, Yahoo, MSN, ICQ, and IRC. It has a nice interface and is easy to use out of the box. It lacks jabber support – Which is available in Trillian pro (but that costs money). I personally don’t use jabber all that much.
Trillian Basic can be downlaoded from there website at http://www.ceruleanstudios.com/downloads/