GemRB is a portable open-source implementation of the Infinity Engine
Cooperative multiplayer graphical RPG and adventure game
Arianne is an engine to develop multiplayer online games like Stendhal
Cross-platform dice roller for multiple RPG systems.
KildClient is a powerful MUD client with a built-in Perl interpreter
General Purpose Engine for Graphic Adventures.
BattleTech MUX Client
A roguelike, contains binaries and source packages for
A suite of tools for any RPG system
RPG character generator for RPG d20 systems.
EE Keeper is a saved game editor for Baldur's Gate Enhanced Edition.
NetHack made ready for internationalization