jIRCii

jIRCii is an IRC (Internet Relay Chat) client that works under Windows, MacOS X and Linux.
jIRCii provides an irc experience similiar to ircii, hADES, and BitchX with the advantages of a solid user interface.
Features include DCC/CTCP support, multiple server connections, IRC over SSL support, tab key nickname completion, and over 75 built-in commands. jIRCii is fully scriptable using sleep, a Perl-like language.
jIRCii is more than just a bare bones IRC Client though. jIRCii includes most of the features of an advanced IRC script. Features such as advanced tab-key completion, over 70 common sense aliases, notify list, ignore list, etc.
jIRCii is very adaptable i.e. you can IRC through multiple windows with an interface that resembles mIRC, or you can IRC through a single window with an interface that resembles ircii.
It is also possible to customize jIRCii by writing scripts in the perl-like language sleep. Other clients have an awkward interface for interfacing scripts with their software. Sleep is directly integrated with jIRCii in a common sense manner. It is powerful enough to keep the advanced coder happy and easy enough to learn that first time scripters can customize the client to their hearts content.
As a side note, jIRCii is written in Java, but dont let that fool you. This client was written with speed in mind.
If youre an old school IRC user looking for a solid modern client, that isnt lame, then jIRCii is the IRC client you have been waiting for.
Requirements:
ï¿­ Java Runtime Environment 1.4.2 or later