Trillian Pro (also known as Trillian Astra) is a fully featured chat client or instant messenger (IM) application. It provides a comprehensive tool for instant messaging, such as file transfers, chat rooms, group chats, encrypted messaging, typing notification, proxy support, SMS support, buddy icons, hundreds of emoticons, audio and video chats, and other standard features. In addition, Trillian also provides unique functionality such as contact message history, a powerful tabbed messaging, global status changes, instant lookup, automation to trigger events, emotisounds, multiple simultaneous connections, privacy settings, and more.