Open Source MMORPG Framework
Arianne is an engine to develop multiplayer online games like Stendhal
An open-source Phantasy Star Online server for *nix
A suite of tools to make running a AzerothCore server on Linux easier
A multiplatform medieval 3D MMORPG
Source of Mana is a unique 2D MMORPG
GameServer is a sophisticated, game server designed for online games
Makes running a PSO server on Linux easier
Free MMORPG
An OpenGL client-server game
Collection of Tools for Perfect World MMORPG
starrydb is game server engine
online 4X browser game engine
Alpha One is based on Vallheru
Python classes to work with Blizzards API
Massively multiplayer online game server and client framework
Blender port of Ryzom art data
Open source server for Other Life/Eternal Lands client
The original Xivio.com World Server Core
Yet Another PHP EVE API Library.