I/O agnostic WebSocket Protocol

WebSockets for microcontrollers

A fast, low-overhead WebSocket client

高性能websocket库, Callback写法，在高频cpu上有不俗表现 https://github.com/antlabs/quickws-example

100w连接仅需500-700MB内存，针对海量连接特别优化的websocket库(kqueue, epoll)，高性能，callback写法，在服务器cpu上有不俗表现 https://github.com/antlabs/greatws-example

WebSockets in C for Embedded Applications

Streaming websocket frame parser and frame builder for c

A lightweight RFC 6455 (Web Socket) implementation for Qt5 & Qt6 (C++)

LWSOCK is a Library of WebSocket for C++. that is correspond client/server.

A lightweight WebSocket server written in C++ from scratch, implementing RFC 6455 with no dependencies beyond OpenSSL

An implementation of Media Object Server using MOS Protocol 4.0

Low-level WebSocket frame encoding and decoding library for Rust

Header-only modern C++ networking client library for WebSocket and HTTP/1.0/1.1, built on standalone Asio, with optional TLS via OpenSSL or wolfSSL and sync/async client APIs.

Lightweight HTTP and Websockets framework for C (with optional WSGI server)

Production-ready Server-Sent Events (SSE) and WebSocket for Go 1.25+ | RFC-compliant | Zero dependencies | 84% test coverage

A high-performance, lightweight WebSocket library for Go.

Websockets client C++ headers

Eaze WebSocket Java is a high-performance, lightweight WebSocket server built from the ground up using Java NIO. It is engineered to handle massive concurrency (benchmarked for 319K+ connections) with minimal resource overhead, leveraging the latest advancements in the Java ecosystem like Virtual Threads and ZGC.

A pure Java WebSocket implementation.

Lightweight, client-only RFC 6455 WebSocket library for .NET Framework 4.6.2+, 4.8, and .NET Standard 2.0; with explicit frame-level control over Ping, Pong, fragmentation, and all opcodes.