High-efficiency minimalist C++ wrapper for OpenGL 4.3
CIRT - CUDA Interactive Ray Tracer
C++ Frontend for the RenderMan Interface
crossplatform multithreaded object-oriented render and audio engine
Rayshade raytracer
Vivid is a modern C++ 3D engine using OpenGL4+
A shader-based software renderer written from scratch in C89
A real time 3D graphics engine written in C++
CSG for jMonkey
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
A framework for distributed computing
Gphoton in a simple 3d modeler and ray tracer.
opengl overlay
Short C++/Java/C#/Python benchmark