Phaser is a free and fast 2D game framework for making HTML5 games
Desktop/Android/HTML5/iOS Java game development framework
The HTML5 Creation Engine
3D game engine/framework in C, with Luajit and Python bindings now
Client-side JS platform for artists, designers and students to express
A node.js plugin to integrate nw.js/electron games with steamworks
Compiler from Go to JavaScript for running Go code in a browser
JavaScript framework to build game engines, games, emulators and apps
A web-based IDE for HTML5 game development. Powered by Phaser
Cerberus Content Management System
Cross platform SDK
Canvas is a Go drawing library based on OpenGL
A continuation of the popular Artemis ECS framework
Extensible HTML5 app for real-time collaborative projects
Pac-Man game written in HTML5 + CSS3 + jQuery with Canvas
Rich HTML UI engine for UE4
Simple isometric graphics library for HTML5 canvas
3D Web UI, Embed Web and Flash in 3D Games, based on WebKit
Powerful html5 & javascript library for creating applications & games.