Kopete is an instant messenger client that allows you to communicate with users of AIM, ICQ, MSN, Yahoo, Jabber, IRC, Gadu-Gadu, and Novell GroupWise Messenger, among others. It is designed to be a flexible and extensible multi-protocol system suitable for personal and enterprise use.
The goal of Kopete is to provide users with a single easy-to-use way to access all of their instant messaging systems. The interface puts people first, and is integrated with the system address book to let you access your contacts from other KDE applications. IM can be intrusive, but Kopete's notification system can be tuned so that only important contacts interrupt you.
Kopete also features tools to enhance your IM, such as message encryption, archiving, and many other fun and useful effects.