OBS Studio - Free and open source software for live streaming and screen recording

Cross-platform asynchronous I/O

BlackHole is a modern macOS audio loopback driver that allows applications to pass audio to other applications with zero additional latency.

A single-header ANSI C gui library

A modern, portable, easy to use crypto library.

coturn TURN server project

Embedded TCP/IP network stack with embedded web server, Websocket, and MQTT client

High performance UI layout library in C.

Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports.

A curated list of Multiplayer Game Network Programming Resources

AirPlay and AirPlay 2 audio player

🔥 比libevent/libuv/asio更易用的网络库。A c/c++ network library for developing TCP/UDP/SSL/HTTP/WebSocket/MQTT client/server.

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

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

Single C file, Realtime CPU/GPU Profiler with Remote Web Viewer

A library for audio and music analysis, feature extraction.

Embedded C/C++ web server

MachOView fork

A fast and compact QR Code encoding library

A Simple library for communicating with USB and Bluetooth HID devices on Linux, Mac, and Windows.

Secure client/server connections over UDP

SQLiteC++ (SQLiteCpp) is a smart and easy to use C++ SQLite3 wrapper.

mTCP: A Highly Scalable User-level TCP Stack for Multicore Systems

C++ Audio Plug-in Framework for desktop, mobile and web

C library for cross-platform real-time audio input and output

tiny HTTP parser written in C (used in HTTP::Parser::XS et al.)

Audio Plugin API

PortAudio is a cross-platform, open-source C language library for real-time audio input and output.

LibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit that provides developers with a vast array of well known published block ciphers, one-way hash functions, chaining …

A C testing library in 1 file. No dependencies, no dynamic allocation. ISC licensed.