Helix Toolkit is a collection of 3D components for .NET
Google Cardboard XR plugin for Unity
Cognitive3D SDK for Unity, analytics for VR/AR/MR
GUI for AV1 (aomenc, rav1e & svt-av1)
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++.
Notification system to display plain text in VR for Unity engine
See geologic outcrops in virtual reality
3D .NET engine for Windows, Linux, Mac
XNA based game engine completely written in c#
Free 3D Photo Maker. Make 3D content yourself!
1st 3D game engine built in C# for .NET, Visual3D Engine's predecessor
A modern 3D App framework using OpenCL to render via raytracing