crossplatform multithreaded object-oriented render and audio engine
Vivid3D is a C++ IDE/3D engine, with python scripting.
Vivid is a modern C++ 3D engine using OpenGL4+
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
A real time 3D graphics engine written in C++
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
A performant, flexible, and easy-to-use real-time 3D rendering engine
Simple voxel raycasting engine in SFML with multithreading support
PHIGS (Programmer's Hierarchical Interactive Graphics System)
Webgl Engine
A cross-platform game framework based on OpenGL and GObject.
3D game engine for C and C++
VB6 Raytracer
Pear3DEngine is a modern and modular 3D development framework