Node-RED is a tool for wiring together hardware devices, APIs and online services in new and interesting ways.

Graphisches Entwicklungstool, basierend auf node.js (Linux-basierte Knoten):
http://nodered.org

https://ifttt.com

http://www.eejournal.com/archives/articles/20150420-protocols/

MQTT - Message Queue Telemetry Transport

Wikipedia Artikel zu ZeroMQ

Guide: http://zguide.zeromq.org/page:all

FHEM (TM) is a GPL'd perl server for house automation:
http://fhem.de/fhem.html

A vendor and technology agnostic open source automation software for smart homes:
https://de.wikipedia.org/wiki/OpenHAB