Conrad Connect - Service for managing smart home devices
FHEM - FHEM (TM) is a GPL'd perl server for house automation.
Homebridge.io - Homebridge is a lightweight NodeJS server you can run on your network that emulates the iOS HomeKit...
pimatic - Home automation framework that runs on node.js.
Control4 - Control4 manufactures a complete line of affordable wired and wireless smart home systems and home...
Node-RED - Node-RED is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways.