Verge3D - Practical framework for creating 3D Web applications
Unity - The multiplatform game creation tools for everyone.
PlayCanvas - PlayCanvas is an open-source game engine built on WebGL and WebVR.
Struckd - 3D Game Creator - Struckd is the next-generation gaming platform for user created content where people of all ages...
Sketchfab - Sketchfab is an industrial design software tool is useful for ideation and for beginners in the industrial design field.
Reality Factory - Reality Factory is a free suite of game development tools for building 3D games.