|Platform:||Mac OS X, Linux, Windows|
Quassel is a distributed IRC client written in Qt 4, which provides functionality similar to screen+irssi or a BNC.Quassel-core provides a server which connects to IRC, maintains the connections, and manages network states. Quassel supports SSL connections and SASL authentication.
Quassel has excellent KDE integration when available on Linux. Turning off KDE integration and subsequently having better QGtkStyle support will probably require a source compile on most distributions, as they ship a KDE integration enabled Quassel.