Trillian

Trillian is a proprietary multiprotocol instant messaging application for Microsoft Windows, Mac OS X, Linux, Android, iOS, BlackBerry OS, and the Web, created by Cerulean Studios It can connect to multiple IM services, such as AIM, Bonjour, Facebook , Google Talk , ICQ, IRC, Extensible Messaging and Presence Protocol , VZ, and Yahoo! Messenger networks; as well as social networking sites, such as Facebook, Foursquare, LinkedIn, and Twitter ; and email services, such as POP3 and IMAP