ThinkPHP Framework
Self-hosted CMS platform based on the Laravel PHP Framework
Arianne is an engine to develop multiplayer online games like Stendhal
The first-ever RPG for WordPress
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Create symmetric sprites: browse, save to PC, or store online
Free strategy browsergame engine.
Modular Gaming Open Source Persistent Browser Based Game Framework
CLM for Joomla! 1.5 + 2.5
Atlarius is no longer under development.