anope : Anope IRC Services ( http://www.anope.org )
asuka : The QuakeNet IRC Server ( http://dev-com.quakenet.org/ )
atheme-services : A portable and secure set of open-source and modular IRC services ( http://atheme.net/ )
bip : Multiuser IRC proxy with SSL support ( http://bip.milkypond.org/ )
bnc : BNC (BouNCe) is used as a gateway to an IRC Server ( http://gotbnc.com/ )
bobotpp : A flexible IRC bot scriptable in scheme ( http://unknownlamer.org/code/bobot.html )
cgiirc : A perl/CGI program to use IRC from a web browser ( http://cgiirc.org/ )
charybdis : The atheme project's IRCd based on ratbox ( http://atheme.org/project/charybdis http://www.stack.nl/~jilles/irc/#charybdis )
dccserver : linux implementation of the mirc dccserver command ( http://www.nih.at/dccserver/ )
dircproxy : an IRC proxy server ( https://code.google.com/p/dircproxy )
eggdrop : An IRC bot extensible with C or TCL ( http://www.eggheads.org/ )
eiwic : A modular IRC bot written in C ( https://github.com/lordi/Eiwic )
emech : UNIX compatible IRC bot programmed in the C language ( http://www.energymech.net/ )
epic4 : Epic4 IRC Client ( http://epicsol.org/ )
epic5 : Epic5 IRC Client ( http://epicsol.org/ )
hexchat : Graphical IRC client based on XChat ( http://hexchat.github.io/ )
ii : A minimalist FIFO and filesystem-based IRC client ( http://tools.suckless.org/ii/ )
iip : Proxy server for encrypted anonymous IRC-like network ( http://www.invisiblenet.net/iip/ )
inspircd : Inspire IRCd - The Stable, High-Performance Modular IRCd ( https://inspircd.github.com/ )
irc-client : A simplistic RFC compliant IRC client ( http://www.irc.org )
irc-server : RFC compliant IRC server ( http://www.irc.org/ )
ircii : An IRC and ICB client that runs under most UNIX platforms ( http://eterna.com.au/ircii/ )
ircmap : Scripts to treate diagrams of IRC networks using the LINKS command ( http://pasky.or.cz/~pasky/irc/ )
ircservices : ChanServ, NickServ, and MemoServ with support for several IRC daemons ( http://achurch.org/services/ )
ircstats : IRCStats tries to be a log analyzer for Linux similar to mIRCStats ( http://humdi.net/ircstats/ )
irker : Submission tools for IRC notifications ( http://www.catb.org/esr/irker/ )
iroffer-dinoex : IRC fileserver using DCC ( http://iroffer.dinoex.net/ )
irssi-otr : Off-The-Record messaging (OTR) for irssi ( https://github.com/cryptodotis/irssi-otr )
irssi-xmpp : An irssi plugin providing Jabber/XMPP support ( http://cybione.org/~irssi-xmpp/ )
irssistats : Generates HTML IRC stats based on irssi logs ( http://royale.zerezo.com/irssistats/ )
konversation : A user friendly IRC Client ( https://kde.org/applications/internet/konversation/ https://konversation.kde.org )
limnoria : Python based extensible IRC infobot and channel bot ( http://supybot.aperio.fr/ )
loqui : a graphical IRC client for GNOME2 on UNIX like operating system ( https://launchpad.net/loqui/ )
miau : Persistent IRC bouncer with multi-client support - a fork of muh ( http://miau.sourceforge.net/ )
nebula : An IRC client for X11 and Motif ( http://nebula-irc.sourceforge.net/ )
ngircd : A IRC server written from scratch ( http://ngircd.barton.de/ )
onis : onis not irc stats ( http://verplant.org/onis/ )
psybnc : psyBNC is a multi-user and multi-server gateway to IRC networks ( http://www.psybnc.at/index.html )
ptlink-ircd : Secure IRC daemon with many advanced features ( http://www.ptlink.net/ )
ptlink-opm : PTlink Open Proxy Monitor ( http://www.ptlink.net/ )
quassel : Qt/KDE IRC client supporting a remote daemon for 24/7 connectivity ( http://quassel-irc.org/ )
rbot : A ruby IRC bot ( http://ruby-rbot.org/ )
redirbot : IRCBot, telling people they should contact you on different nickname ( https://github.com/yaccz/redirbot )
rhapsody : IRC client intended to be displayed on a text console ( http://rhapsody.sourceforge.net/ )
savirc : User friendly IRC client with unicode support and tcl/tk scripting ( http://www.savirc.com/ )
scrollz : Advanced IRC client based on ircII ( http://scrollz.com/ )
shadowircd : An IRCd based on charybdis that adds several useful features ( http://shadowircd.net )
smuxi : A flexible, irssi-like and user-friendly IRC client for the Gnome Desktop ( http://www.smuxi.org/main/ )
srvx : A complete set of services for IRCu 2.10.10+ and bahamut based networks ( http://www.srvx.net/ )
telepathy-idle : Full-featured IRC connection manager for Telepathy ( http://cgit.freedesktop.org/telepathy/telepathy-idle )
ultimate : An IRCd server based on DALnet's DreamForge IRCd ( http://www.shadow-realm.org/ )
unrealircd : An advanced Internet Relay Chat daemon ( http://www.unrealircd.com/ )
weechat : Portable and multi-interface IRC client ( http://weechat.org/ )
xaric : An IRC client similar to ircII, BitchX, or ircII EPIC ( http://xaric.org/ )
xchat-otr : Off-The-Record messaging (OTR) for xchat ( http://irssi-otr.tuxfamily.org )
znc : An advanced IRC Bouncer ( http://znc.in )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/gentoo-portage
If you have a problem : ycarus(-at-)zugaina.org