Avogadro libraries provide 3D rendering, visualization, and analysis
The open source mesh processing system
3D Engine with Blender Integration
A React renderer for Three.js
DirectX 8 to OpenGL wrapper for legacy apps and portability
LDraw™ editor for LEGO® style digital building instructions.
Growth-grammar related Interactive Modelling Platform
Viewer and exporter for Unreal Engine 1-4 assets
Shadow mapping in Qt3D using C++
Open source set for Notepad++ for building worlds in X3D and VRML
A shader-based software renderer written from scratch in C89
Lightweight and modular C++11 graphics middleware for data and games
GPU Texture Generator
A declarative 3D globe data visualization library built with Three.js
A WebGL-based 3D engine for technical visualization
Prerenders static HTML in a single-page application
a free program for viewing / morphing / animate obj 3ds mesh objects
A framework for distributed computing
kicad 3D is aimed to add 3D realistic feature on kicad pcb CAD
XNA based game engine completely written in c#
simple 3d scene viewer for windows/linux/android