stb single-file public domain libraries for C/C++

A simple and easy-to-use library to enjoy videogames programming

Cross-platform asynchronous I/O

High performance UI layout library in C.

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

A single-header ANSI C gui library

mimalloc is a compact general purpose allocator with excellent performance.

A simple Minecraft clone written in C using modern OpenGL (shaders).

C in four functions

minimal cross-platform standalone C headers

A fast entity component system (ECS) for C & C++

3D engine with modern graphics

Audio playback and capture library written in C, in a single source file.

eSpeak NG is an open source speech synthesizer that supports more than hundred languages and accents.

A cross-platform library to access USB devices

A tiny immediate-mode UI library

Classic Tomb Raider open-source engine

Collection of cross-platform one-file C/C++ libraries with no dependencies, primarily used for games

cc65 - a freeware C compiler for 6502 based systems

Free, easy, portable audio engine for games

🎃 Windowless WebGL for node.js

💠 Single-file glTF 2.0 loader and writer written in C99

A C/C++ single-file library for drop-in lightmap baking. Just use your existing OpenGL renderer to bounce light!

🚀 Making multi-player gamedev simpler since 2017

Port of Box2D to JavaScript using Emscripten

cmftStudio - GUI counterpart for:

Small and efficient screen recording utility for Windows 10 and 11

Engine for making things with a MS-DOS feel, but for modern platforms

A framework for rapid prototyping and development of real-time rendering techniques.

The most powerful open source SDK for the PS1 (as far as open source PS1 SDKs go). Not recommended for beginner use.