FlightGear Flight Simulator: free open-source multiplatform flight sim
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
High-efficiency minimalist C++ wrapper for OpenGL 4.3
CIRT - CUDA Interactive Ray Tracer
Support for legacy OpenGL in core profiles
crossplatform multithreaded object-oriented render and audio engine
C++ Frontend for the RenderMan Interface
Rayshade raytracer
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Tao3D is a programming language for real-time interactive 3D
A tool that uses OpenCL to procedurally generate 3D models
A Realistic and Rich 3D Environment
Program for drawing 3D surfaces from parametric equations
.NET wrapper for the Irrlicht Engine
non-trivial OpenGL project for research purpose
A raytracer that tries to combine simplicity with power.
Perl bindings to the Modern OpenGL API
3D .NET engine for Windows, Linux, Mac
realtime 3d surface rendering library
Imagin Raytracer is a multithreaded command line raytracer
3D File format viewer/explorer