Bersirc (http://www.bersirc.com)
pIRCh (http://www.pirchat.com)
Klient (http://www.klient.com)
vIRC (Visual IRC) (http://www.hansprestige.com/virc)
Gaim (http://gaim.sourceforge.net)
WiRC (http://wircirc.cjb.net)

mIRC (http://www.mirc.co.uk)
Trillian (http://www.trillian.cc)

BitchX (http://www.bitchx.org)
irssi (http://www.irssi.org)
Xchat (http://www.xchat.org)
EPIC (http://www.epicsol.org)
kvirc (http://www.kvirc.net)
tkirc2 (http://netsplit.de/tkirc2/)