PubSubHubBub

http://code.google.com/p/pubsubhubbub/ https://pubsubhubbub.googlecode.com/git/pubsubhubbub-core-0.4.html

A simple, open, server-to-server webhook-based pubsub (Publish-Subscribe) protocol for any web accessible resources.

=API=

Node.js
https://www.npmjs.org/package/pubsubhubbub

npm install pubsubhubbub

Node-RED
TODO