Are you looking for an open source cross platform HTML5 powered game engine, that’s open source, free and comes with a complete editor in addition to the underlying framework? Perhaps the Wade Game Engine by Clockwork Chilli is what you are looking for. While open source, WADE is shipped under a custom license you should take note of. The TL;DR version of the license:
This license allows you to make games and non-games, for any purpose including selling and licensing, without paying anything to Clockwork Chilli. However you must not:
- Distribute non-compiled (or non-minified) versions of Clockwork Chilli's source code.
- Create a product that competes with WADE.
You can run WADE directly in the Chrome browser or can download a local installed version for Linux, Mac and Windows platforms. If you want to learn more, be sure to check out the WADE game engine in action in this video or embedded below.