Arianne is an engine to develop multiplayer online games like Stendhal
online 4X browser game engine
Alpha One is based on Vallheru
Game engine allows you to create own MMORPG
Runescape 2007 / oldschool client with many features.
Modular Gaming Open Source Persistent Browser Based Game Framework
Mafia MMORPG Browser-Based game
Create your own online real-time browser-based MMO in your website
Earthlead is a free massive multiplayer online browser strategy game.
Tactics is an Online Role Playing Game developed by the Gametack team
Project to development common data format for Eve market order data
PlaneShift Role Playing Game immersed into a 3D virtual fantasy world
Atlarius is no longer under development.
Conquer the universes with Spaceships