KDE-based next generation IRC client with module support

 A highly configurable graphical IRC client with an MDI interface,
 built-in scripting language, support for IRC DCC, drag & drop file
 browsing, and much more. KVIrc uses the KDE widget set, can be extended
 using its own scripting language, integrates with KDE, and supports
 custom plugins.
 .
 If you're looking for a simple and plain IRC client, KVIrc is probably the
 wrong choice as it is rather big. But if you want a highly customizable client
 you won't regret the installation.