irssi
Modular, Secure, and Well Designed IRC Client
Irssi is a modular IRC client for UNIX that currently only has a text mode user interface. However, 80-90% of the code is not text mode specific, so other UIs could be created easily. Also, Irssi is not really even IRC specific anymore. There are already working SILC and ICB modules available. Support for other protocols, like ICQ and Jabber, could be added some day, too. It is the code that separates Irssi from ircII, BitchX, epic, and the rest of the text clients. It is not using the ircII code.
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Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.