Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

PCSX2 - The Playstation 2 Emulator

Simple and Fast Multimedia Library

Sol3 (sol2 v3.0) - a C++ <-> Lua API wrapper with advanced features and top notch performance - is here, and it's great! Documentation:

Multi-channel signed distance field generator

Open source c++ skeletal animation library and toolset

Header only C++11 tiny glTF 2.0 library

EntityX - A fast, type-safe C++ Entity-Component system

The Haiku operating system. (Pull requests will be ignored; patches may be sent to https://review.haiku-os.org).

Learning Modern 3D Graphics Programming

cr.h: A Simple C Hot Reload Header-only Library

NanoRT, single header only modern ray tracing kernel.

Debugging the way it's meant to be done

Example application shows how to use undocumented dark mode API introduced in Windows 10 1809.

Oculus SDK for Virtual Reality

SimpleAI is a small C++ AI behaviour tree based library with a QT5 based remote debugger (and with optional LUA bindings) released under MIT.

A small, reference GI renderer

A plugin for Deus Ex: Human Revolution Director's Cut, restoring the gold filter, post processing and shading from the original Deus Ex: Human Revolution

Cross platform GLFW based port of Stan Melax's BunnyLOD Easy Mesh Simplification

Clone of https://bitbucket.org/jonasmeyer/microprofile

Portable ASCII and Unicode string manipulation functions for C++.

A lightweight C++ wrapper around OpenGL