Open source HTML5 game framework that offers WebGL and Canvas
Desktop/Android/HTML5/iOS Java game development framework
Free, cross-platform 2D game engine powered by Haxe and OpenFL
The game engine for everyone
Cross-platform game engine in Rust
JavaScript framework to build game engines, games, emulators and apps
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Egret is a brand new open mobile game and application engine
HTML5 Apps for iOS/Android and Desktop Browsers