Vypress Chat/quickChat clone for the GTK+ toolkit. Vqcc-gtk is a chat application written in C for the GTK+ toolkit, primarily used in small LAN's. Based on quickChat/Vypress Chat (TM) for Windows (from Vypress Research) and is licensed under the GPL.
The application supports both quickChat and Vypress Chat(TM) protocols and hopefully is compatible enough to substitute those applications when using Linux, FreeBSD or another *NIX desktop. You need no server to run, however it is not possible to communicate outside your LAN (or subnet).