Arianne is an engine to develop multiplayer online games like Stendhal
Action RPG that's easy to mod
The Clue! / Der Clou!
Free MMORPG
RPG character generator for RPG d20 systems.
Built to be ease of use, with no programming knowledge, Multi-platform
Free 3D Roguelike action RPG
Free MMORPG Engine. Develop and host graphical browser-based games.