Trillian is a full-featured standalone, resizable chat client that supports AIM, ICQ, MSN, Yahoo Messenger, and IRC. It provides features not available with the original network clients, while supporting standard features such as audio chat, file transfer, group chats, chat rooms, friend icons, multiple simultaneous connections to the same network, server-side contact import, input notification, direct connection . (AIM), proxy support, encrypted messaging (AIM/ICQ), SMS support and privacy settings.

Without stealing your homepage and without other built-in software, pop-ups or spyware, Trillian provides unique features such as:

• contact message history,
• powerful skin language,
• tabbed posts,
• global status change (disconnecting all networks at once),
• Instant search (automatic integration with Wikipedia),
• contact alerts,
• an advanced automation system for triggering events based on everything that happens in the client,
• docking,
• hundreds of emoticons
• emotion sounds,
• shell extensions for file transfer and
• taskbar notifications.