See also: Instant Messengers
Adapted from their homepage:
A flexible and extendable multi-network instant messaging system designed as a plugin-based system, similar to Miranda IM. Developed for Linux KDE. Kopete is a big project which already supports messaging protocols like Jabber, ICQ, AIM, Yahoo, IRC, Windows LANs, GaduGadu, and SMS. All protocols are plugins and allow modular installment, configuration, and usage without the main application knowing anything about the plugin being loaded.
The goal of Kopete is to provide users with a standard and easy-to-use interface between all of their instant messaging systems, but at the same time also providing developers with the ease of writing plugins to support a new protocol.
The core Kopete development team provides a handful of plugins that most users can use, in addition to templates for new developers to base a plugin off of.
TakeDown.NET -> “Kopete”