Trillian is a proprietary multiprotocol instant messaging application. Developed by Cerulean Studios
License: Freemium
Trillian is a proprietary, cross-platform messaging application that supports a wide range of protocols and offers advanced features like encryption and customizable themes, making it suitable for users seeking a rich messaging experience. In contrast, Kopete is an open-source alternative primarily focused on Linux users, offering basic features with plugin support, making it ideal for users who prefer a simple, community-driven solution.