- LiquidFun :: a 2D physics engine for games
- PlayCanvas WebGL Game Engine
- OpenGameArt.org: free assets for video games
- three.js: JavaScript 3D library
- cannon.js: A lightweight and simple 3D physics engine for the web
- A comprehensive path-finding library for grid based games
- blend4web: open source framework for authoring of 3D graphics and audio in browsers
- pixijs: 2D webGL renderer with canvas fallback