The cross-platform toolkit
Arianne is an engine to develop multiplayer online games like Stendhal
PEGI helps parents to make informed decisions when buying video games
🚀 Professional Social Dating Web App Builder (formerly pH7CMS)
JavaScript framework to build game engines, games, emulators and apps
Cerberus Content Management System
JPHP - an implementation of PHP on Java VM
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Game engine allows you to create own MMORPG
Modular Gaming Open Source Persistent Browser Based Game Framework
SuperWikia: The Runtime/Realtime Environment for Codesmiths
LEGADEE (LEarning GAme DEsign Environment)
Create your own online real-time browser-based MMO in your website
Battlefield 3 Remote Administration and Information PHP Class