Trillian is a popular multi-protocol instant messaging client developed by Cerulean Studios. It enables users to simultaneously use multiple IM services and protocols, including AIM, ICQ, Windows Live Messenger, Yahoo Messenger, IRC, XMPP/Jabber, Bonjour, Gadu-Gadu, Novell GroupWise Messenger, Lotus Sametime, SILC, SIMPLE, and Zephyr networks all from one application...