One framework for creating powerful cross-platform games
Real-time physically based rendering engine for Android, iOS, and more
The open-asset-importer-library repository
Interactive, thoroughly customizable maps in the browser
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Efficient glTF 3D import / export package for Unity
Open source Cardboard SDK and samples
Using $5 Google Cardboard to replicate Hololens
3D Engine c++
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
Cerberus Content Management System
3D modeler, 3D game maker, 3D demo maker
Source mirror of LLGL GitHub repository
3D PBR Texture Painting Software
Free 3D Mobile CAD
Lightweight and modular C++11 graphics middleware for data and games
Cross-platform 2D and 3D game engine
3D .NET engine for Windows, Linux, Mac
Egret is a brand new open mobile game and application engine
Not your usual Architectural Modeler
Free vector,quaternion,matrix math library
A cross-platform OpenGL based lightweight scenegraph library