Windows

Application

Setup Guide

Info
Gaim Gaim Free N/A Recommended standalone client.
mIRC mIRC $20 (30 day trial) N/A

–
XChat Xchat $20 (30 day trial) N/A

The source code remains free if you know how to compile your own version.
Firefox icon 50x50 Chatzilla Free N/A If you use the Firefox web browser then you can use the Chatzilla IRC plugin, click the icon on the left, then follow the installation link at the bottom of that page, then restart your browser. Then launch the Chatzilla plugin by using this url in Firefox: irc://irc.chatspike.net:6667#finale