* [socket.io engine.io@6.6.11](https://github.com/socketio/socket.io) – Realtime application framework for Node.js server enabling bidirectional communication.

* [Socket.IO for Golang v3.0.6](https://github.com/zishang520/socket.io) – Modern, idiomatic Go implementation enabling real-time bidirectional communication over WebSockets and other transports.