Open source HTML5 game framework that offers WebGL and Canvas
One framework for creating powerful cross-platform games
Open source library for creative expression on the web, desktop, etc.
JavaScript framework to build game engines, games, emulators and apps
2D Game Engine
3D .NET engine for Windows, Linux, Mac
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Cross-platform 2D game engine