IrcPlugin is a project mainly written in Java, it's free.
Replaced by IRCanary. Click below. An IRC bot plugin for hmod, a Minecraft server mod
1) Place into your plugins directory
2) Create irc.properties, add the config options (description in [], default in <>):
irc-charlimit=<390>[maximum number of characters allowed in a irc-to-server message]
irc-host=[IRC host to connect to]
irc-name=[Nickname of your bot]
irc-echo=
3) Run your server
4) Open ircAdmins.txt (the plugin will create it for you) and add users as it describes
5) Say /ircrefresh in-game as an admin (give flag to others if you really want) to refresh the irc admin list
Note: This code is licensed under the GPL2 and contains pircbot (GPL2 as well) code (see the bin directory).
See http://www.jibble.org/licenses/gnu-license.php for details