Arianne RPG
Arianne is an engine to develop multiplayer online games like Stendhal
... of creatures are ready to fight, above and below ground, and as players level up they can compare themselves on a detailed stats website.
The engine Marauroa provides a simple way of creating games on a portable and robust server architecture. Marauroa manages the client server communication and provides an object orientated view of the world for game developers. It handles database access in a transparent way to store player accounts, character progress and the state of the world