Command-line client for WebSockets, like netcat (or curl)
Realtime application framework (Node.JS server)
Future-based Tungstenite for Tokio
Network library for developing TCP/UDP/SSL/HTTP/WebSocket/MQTT client
Fast and low latency asynchronous socket server & client C++ library
arduinoWebSockets
An embedded web server
deepstream.io server
Minimal and idiomatic WebSocket library for Go
Extensible socket server application framework for .NET
websocket and http client and server library, with TLS support
A Socket.IO client library for Java
Eclipse Tyrus is the open source JSR 356 - Java API for WebSocket
HTTP/WebSocket server C++14 library
Socket.IO server implemented on Java
Universal Ruby library to handle WebSocket protocol
Bringing Http/Https and WebSockets High Performance servers for PyPy3
A server side alternative implementation of socket.io
μWebSockets for Node.js back-ends
JSON-RPC 2.0 implementation over WebSockets for Node.js
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
WebSocket and WAMP in Python for Twisted and asyncio
Minimalist websocket framework for Go