Created by Cerulean Studios and released in 2001, Trillian is a multiheaded IM client that connects users of multiple public IM services such as AIM, Windows Live Messenger, Jabber, Skype and more. If you have friends on different networks, you can use Trillian to manage your various IM accounts. When you log in to Trillian, users on proprietary systems will see you as being online in each of those systems. Trillian uses a color-code system to indicate which service you are receiving messages through. Features of Trillian include Emotiblips, skins and customizable interfaces, plug-ins, and more. There are free and commercial versions of Trillian available.