KVIrc

IRC client, based on the Qt GUI toolkit, which has the following tools:

• MDI floating windows,
• full GUI configuration,
• theme support,
• popup activity notifications,
• status bar with applet support,
• support for 14 languages,
• proxy and SSL support,
• Unicode support,
• the ability to connect to multiple servers at once,
• standard DCC CHAT and SEND support,
• external DCC types: VOICE, RSEND, GET, RECV,
• DCC CHAT over SSL,
• Scripting language interpretation,
• Perl support, etc.