LWJGL is a Java library that enables cross-platform access to popular native APIs useful in the development of graphics (OpenGL, Vulkan, bgfx), audio (OpenAL, Opus), parallel computing (OpenCL, CUDA) and XR (OpenVR, LibOVR, OpenXR) applications.

The high-speed OpenGL, OpenCL, OpenAL, OpenXR, GLFW, SDL, Vulkan, Assimp, WebGPU, and DirectX bindings library your mother warned you about.

The Open Toolkit library is a fast, low-level C# wrapper for OpenGL, OpenAL & OpenCL. It also includes windowing, mouse, keyboard and joystick input and a robust and fast math library, giving you everything you need to write your own renderer or game engine. OpenTK can be used standalone or inside a GUI on Windows, Linux, Mac.

KlayGE is a cross-platform open source game engine with plugin-based architecture.

C++ game engine for Windows, macOS, Linux, iOS, tvOS, Android, and web browsers

NOTE: development in stuntrally3 repo. 3D racing game based on VDrift and OGRE with own Track Editor. The main repository with Stunt Rally 2.x sources and data.

A libretro frontend written in golang

3D FPS game engine with full dynamic lighting and shadows

An Open-Source port of the 1999 Game "Star Wars Episode 1: Racer"

The Dæmon game engine. With some bits of ioq3 and XreaL.

A spare-time C# .NET 8 game engine project. Cross-platform, multi-threaded.

Easy to use cross-platform 2D game library for C++

BetterSpades, an Ace of Spades client targeted at low end systems (GL/ES 1.1). Runs on your grandmother's rig!

Lightweight game engine.

An advanced C++ 3D game engine powering an in-production game yet to be announced

Audio playback/capturing engine for C#

Binary Tetris

An SDL2-based implementation of OpenAL in a single C file.

Cross-platform gaming kit in the D programming language

A SoundFont MIDI synthesizer for .NET