Cross-platform asynchronous I/O

Zstandard - Fast real-time compression algorithm

A Curated List of Multiplayer Game Network Programming Resources

minimal cross-platform standalone C headers

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

Antialiased 2D vector drawing library on top of OpenGL for UI and visualizations.

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

Multi-format archive and compression library

Implementations of SIMD instruction sets for systems which don't natively support them.

Free, easy, portable audio engine for games

Single header library for writing non-blocking HTTP servers in C

A basic 3D scene implemented with various engines, frameworks or APIs.

Fast C/C++ HTML 5 Parser. Using threads.

Minimalistic MP3 decoder single header library

Mesh triangle reduction using quadrics

Meta loader for Vulkan API

Audio decoding libraries for C/C++, each in a single source file.

C and C++ headers, C# and Python classes, Rust files and Go package for icon fonts Font Awesome, Fork Awesome, Google Material Design icons and symbols, Pictogrammers Material Design icons, Kenney …

Lightweight open source FBX importer

Umka: a statically typed embeddable scripting language

CPU INFOrmation library (x86/x86-64/ARM/ARM64, Linux/Windows/Android/macOS/iOS)

daslang - high-performance statically strong typed scripting language

Single source file FBX loader

Platform independent low-level JIT compiler

Modest is a fast HTML renderer implemented as a pure C99 library with no outside dependencies.

Single header stackful cross-platform coroutine library in pure C.

Virtual Machine for Intermediate Representation