Command-line client for WebSockets, like netcat (or curl)
Realtime application framework (Node.JS server)
A barebones WebSocket client and server implementation
An embedded web server
Network library for developing TCP/UDP/SSL/HTTP/WebSocket/MQTT client
Fast and low latency asynchronous socket server & client C++ library
deepstream.io server
Polyglot replacement for Ruby WebSocket servers with Action Cable
websocket and http client and server library, with TLS support
arduinoWebSockets
Future-based Tungstenite for Tokio
Minimal and idiomatic WebSocket library for Go
Extensible socket server application framework for .NET
A Socket.IO client library for Java
Fast, well-tested and widely used WebSocket implementation for Go
HTTP/WebSocket server C++14 library
Universal Ruby library to handle WebSocket protocol
Eclipse Tyrus is the open source JSR 356 - Java API for WebSocket
Socket.IO server implemented on Java
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
A simple server for sending and receiving messages in real-time
WebSocket client library built on SwiftNIO