Realtime application framework (Node.JS server)
JSON-RPC 2.0 implementation over WebSockets for Node.js
High performance Node.js webserver with a simple-to-use API
A barebones WebSocket client and server implementation
Polyglot replacement for Ruby WebSocket servers with Action Cable
Use your text editor to write in your browser
A server side alternative implementation of socket.io
A Socket.IO client library for Java
Command-line client for WebSockets, like netcat (or curl)
An embedded web server
Bringing Http/Https and WebSockets High Performance servers for PyPy3
websocket and http client and server library, with TLS support
LaravelS is an out-of-the-box adapter between Laravel/Lumen and Swoole
Compliant web server for the most demanding of applications
Eclipse Tyrus is the open source JSR 356 - Java API for WebSocket
arduinoWebSockets
Socket.IO server implemented on Java
Universal Ruby library to handle WebSocket protocol
Tiny WebSocket library for Go
Just another simple, fast, and resilient open-source WebSockets server
μWebSockets for Node.js back-ends
A simple server for sending and receiving messages in real-time
WebSocket client library built on SwiftNIO
deepstream.io server
Socket.IO-client for iOS/OS X