node serve
Many to many WebSocket proxy server with pluggable routing logic. e.g. Take a bunch of existing WebSocket servers that only accept a single client connection and allow it to be used with multiple clients at once.
This is A DevTools For NodeJs.
Collaboration server for X Editor (yjs + WebSocket)
MCP server exposing the SnowLuma OneBot action catalog (docs + JSON Schemas) and optional execution to LLM clients.