Verge3D - Practical framework for creating 3D Web applications
BlitzMax - With the developing version BlitzMax NG other 'targets' are available: ARM architecture, Raspberry, Android, HTML (Emscripten). RAPID DEVELOPMENT. Just open the IDE, write your code, hit F5 and see immediately the results!
PlayCanvas - PlayCanvas is an open-source game engine built on WebGL and WebVR.
BlitzPlus - Create 2D Games for Windows.
Sketchfab - Sketchfab is an industrial design software tool is useful for ideation and for beginners in the industrial design field.
Monkey 2 - An easy to use, cross platform, games oriented programming language