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