Quassel IRC is a modern, cross-platform, distributed IRC client, meaning that one (or multiple) client(s) can attach to and detach from a central core -- much like the popular combination of screen and a text-based IRC client such as WeeChat, but graphical. In addition to this uniqe feature, we aim to bring a pleasurable, comfortable chatting experience to all major platforms (including Linux®, Windows®, and MacOS X® as well as Qtopia-based cell phones and PDAs), making communication with your peers not only convenient, but also ubiquitous available.
And the best of all: It's free - as in beer and as in speech, since we distribute Quassel under the GPL, and you are welcome to download and see for yourself!