Trillian is a fully featured, stand-alone chat client that supports chatting on Astra, Windows Live, Facebook, Yahoo, MySpace, AIM, E-mail, Google Talk, Skype, ICQ, Jabber, IRC, Bonjour, and others. It also helps manage your social networks such as Facebook and Twitter. Trillian provides capabilities not possible with most original network clients, while supporting standard features such as audio and video chat, file transfers, group chats, buzzing, tabbed chats, tablet-based drawing, message history, plug-ins, avatars, multiple simultaneous connections to the same network, typing notifications, proxy support, and encrypted messaging.
Trillian also integrates with Trillian for Web and Trillian for iPhone, companion products that help you maintain a single contact list across all of your devices and locations.
What's new in this version:
Version 4.2 adds instant lookup for links, easier retweeting, simultaneous sign-in for Windows Live chat, and an organized history window.