Command-line client for WebSockets, like netcat (or curl)
Realtime application framework (Node.JS server)
An embedded web server
Socket.IO server implemented on Java
websocket and http client and server library, with TLS support
Fast and low latency asynchronous socket server & client C++ library
Eclipse Tyrus is the open source JSR 356 - Java API for WebSocket
A simple WebSocket server
arduinoWebSockets
Bringing Http/Https and WebSockets High Performance servers for PyPy3
Websockets for Laravel
deepstream.io server
Just another simple, fast, and resilient open-source WebSockets server
Universal Ruby library to handle WebSocket protocol
WebSocket client library built on SwiftNIO
High performance Node.js webserver with a simple-to-use API
HTTP proxy server,support HTTPS & websocket
LaravelS is an out-of-the-box adapter between Laravel/Lumen and Swoole
μWebSockets for Node.js back-ends
Coherent, zero-dependency, lazy, simple, GraphQL
socket.io library for golang, a realtime application framework
JSON-RPC 2.0 implementation over WebSockets for Node.js
Polyglot replacement for Ruby WebSocket servers with Action Cable
Ultra fast and low latency asynchronous socket server & client C#
Network library for developing TCP/UDP/SSL/HTTP/WebSocket/MQTT client