LIRC

LIRC is an IRC client. It allows you to connect to an IRC server, and talk to people all over the world.
List of main features

• Unlimited number of windows, lists, entries in lists, etc.
• Extensive script language, of which Basic is a subset.
• Child tasks.
• Uses ZapRedraw, i.e. fast.
• Flood protection, both incoming and outgoing.
• Supports all normal IRC protocols, and many additional ones.
• A large number of things are customisable, as usual.