Three years ago, Trillian started out as a basic IRC client which quickly expanded to support the AIM, MSN, ICQ, and Yahoo messaging protocols. It was, at first, a free program (free as in beer) but the developers, working under the name Cerulean Studios about a year ago, on September 10, 2002, released their Pro version, Trillian 1.0 and, for the first time, charged for it, US$25. As of Sept 10, the long-awaited Trillian Pro 2.0 has been released.