$ apt-cache search IRC
bitlbee - IRC gateway to IM chat networks
centerim - Клиентская программа для IM (быстрого общения). Поддержка протоколов: ICQ, Yahoo!, AIM, IRC, MSN, Gadu-Gadu и Jabber. Клиент для LiveJournal и RSS.
centerim-debuginfo - Console ncurses based IM client. ICQ, Yahoo!, AIM, IRC, MSN, Gadu-Gadu and Jabber protocols are supported. Internal RSS reader is also provided (debug files)
dircproxy - IRC proxy server
eggdrop - Eggdrop is an IRC bot, written in C
emacs23-erc - IRC Клиент для Emacs
irssi - Irssi is an IRC client
irssi-debuginfo - Irssi is an IRC client (debug files)
irssi-perl - Perl scripts for irssi
kdenetwork-kopete - Instant Messaging client
kdenetwork-ksirc - IRC client for KDE
konversation - Konversation is a user friendly Internet Relay Chat client.
kvirc - KDE Enhanced Visual IRC Client
naim - An ncurses-based console AIM, ICQ, IRC, and Lily client
pidgin - A GTK+ based multiprotocol instant messaging client
quassel - Quassel - IRC client
qutim - Клиент сервисов мгновенных сообщений qutIM
qutim-protocol-irc - IRC protocol for qutim
qutim-protocol-irc-debuginfo - IRC protocol for qutim (debug files)
telepathy-idle - A full-featured IRC connection manager
tircproxy - (transparent) IRC proxy with DCC support.
unreal - UnrealIRCD is a powerful irc daemon
weechat - fast, light & extensible IRC client
xchat - Графический IRC клиент
Supybot - IRC bot written in Python
fortunes-ALT-irc - Quotes from IRC channel #altlinux (freenode network)
jirc - Bridges an IRC channel to a Jabber conference room.
python-module-supybot-plugins - IRC bot written in Python - additional plugins
rbot - ruby IRC bot
vim-plugin-vimirc - IRC-клиент для VIm
xemacs-erc - IRC client for Emacs
xemacs-riece - IRC (Internet Relay Chat) client for XEmacs
xemacs-zenirc - IRC Client
Вот, за вас дал одну команду и проредил из неё лишнее.
