Helix Toolkit is a collection of 3D components for .NET
3D Engine c++
C# graphics library used for 3D modeling, built with OpenGL/OpenTK
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
A modern media player, wrote in C# & C++. Based on the Iris3D engine.
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
.NET wrapper for the Irrlicht Engine
3D .NET engine for Windows, Linux, Mac
XNA based game engine completely written in c#
A cross-platform game framework based on OpenGL and GObject.
https://github.com/horde3d/Horde3D
Multi-Language Wrapper Collection for the Irrlicht Engine