Arianne is an engine to develop multiplayer online games like Stendhal
The first-ever RPG for WordPress
ffxisf is free mmorpg game
Online WFRP V2 Character Generator
Alpha One is based on Vallheru
Anarchy Online Emulator
Online Zombie Game is a medieval-zombie apocalypse rpg game.
3D urban environment renderer : browser-app ; as well as a GTA clone
Star Trek Web browser game
XMICAE is a framework for browser-based IF/RPG narratives.
Rolemaster Combat program
NinYawg Adventure
Board and web browser MMORPG
WhiteDogRPG is A-PHP-RPG engine.
War of Respect is an online turn-based MMORPG in 2D-anime style.