LayaAir is an open-source 2D/3D engine
You can make it - Open Source MMORPG Platform
Web-based karaoke software suite
X3D Prototypes for the SMUOS Component
Massively multiplayer online game server and client framework
3D urban environment renderer : browser-app ; as well as a GTA clone
JAVA websocket implementation for a bomberman-like game
Web based fantasy sports draft app
Free strategy browsergame engine.
Modular Gaming Open Source Persistent Browser Based Game Framework
SuperWikia: The Runtime/Realtime Environment for Codesmiths
Rock cms, un script php que piensa por si mismo.
An extensible development framework for roleplay games.
Moteur de jeux de rôles descripifs (RP) en PHP
War of Respect is an online turn-based MMORPG in 2D-anime style.
No lo se