You can make it - Open Source MMORPG Platform
Fast and lightweight JavaScript game engine built on WebGL and glTF
JavaScript framework to build game engines, games, emulators and apps
The imaginary eight-bit machine
Javascript Canvas Framework
Simple data driven web based gamebook engine using javascript.
Built to be ease of use, with no programming knowledge, Multi-platform
Free strategy browsergame engine.
Modular Gaming Open Source Persistent Browser Based Game Framework
Rock cms, un script php que piensa por si mismo.
An extensible development framework for roleplay games.
Halo Dark Interface es una Interfaz para Halo Custom Edition