0 A.D. is a free, open-source, cross-platform real-time strategy game.
LGSL (Live Game for PHP 5.4-8+: online status for various gameservers
An online multiplayer real time strategy game
X3D Prototypes for the SMUOS Component
JAVA websocket implementation for a bomberman-like game
Counter-Strike Global Offense Web Administration
A open-source online football manager like hattrick
Game engine and ready browser game Pulsar Online
Particle Battle is a little online multiplayer real-time strategy Game
Browser based platform for playing CCGs