Cross-Platform C++ 2D/3D game engine
An OpenGL RTS game engine written in C
A modern cross-platform low-level graphics library
Xash3D FWGS engine
Simple and light-weight 3D game engine
Voxel game engine in C++ with OpenGL
Zig game engine & graphics toolkit
GZDoom is a feature centric port for all Doom engine games
A re-implementation of Freelancer
Vulkan renderer mod for Minecraft
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
UZDoom is a feature centric port for all Doom engine games
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
aka ogre v2 - scene-oriented, flexible 3D C++ engine
3D Engine c++
A Minecraft mod designed to improve frame rates
A modular Common Lisp game engine
Improved Quake III Arena engine
Multi-Joint dynamics with Contact. A general purpose physics simulator
Simple DirectMedia Layer
Animation engine for explanatory math videos
3D Procedural Game Engine Using OpenGL
Android OpenGL 2.0 application to view 3D models
SwiftShader is a high-performance CPU-based implementation
Innovative user interfaces made easy