Command-line client for WebSockets, like netcat (or curl)
A barebones WebSocket client and server implementation
Realtime application framework (Node.JS server)
deepstream.io server
Network library for developing TCP/UDP/SSL/HTTP/WebSocket/MQTT client
Fast and low latency asynchronous socket server & client C++ library
An embedded web server
arduinoWebSockets
Polyglot replacement for Ruby WebSocket servers with Action Cable
Future-based Tungstenite for Tokio
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
A simple server for sending and receiving messages in real-time
WebSocket client library built on SwiftNIO
High performance Node.js webserver with a simple-to-use API