A Perl script plugin for irssi that uses libnotify's notify-send to give desktop users alerts when messages of interest appear. See the wiki MainPage for more information on setup and features.
To download this plugin, use the source code repository ('Source' tab).
LATEST: There is a "dbus-branch" that is using perl::Net::DBus to send these messages instead of a higher-footprint shell call to notify-send. It's currently not usable, but I'm working on it. If you want the working version, just use the version in the trunk.