Vulkan-based implementation of D3D9, D3D10 and D3D11 for Linux / Wine
Helix Toolkit is a collection of 3D components for .NET
STL Viewer for java
Lightweight and modular C++11 graphics middleware for data and games
simple 3d scene viewer for windows/linux/android
Pear3DEngine is a modern and modular 3D development framework
Free vector,quaternion,matrix math library