RipplesIoT - Ripples provide wireless inventory tracking and asset monitoring solutions on the cloud for manufacturing, warehousing, construction, and healthcare industries.

FHEM - FHEM (TM) is a GPL'd perl server for house automation.

The Thing System - The Thing System is an open source IoT platform.

pimatic - Home automation framework that runs on node.js.

Homebridge.io - Homebridge is a lightweight NodeJS server you can run on your network that emulates the iOS HomeKit...

BuildingOS - Our building energy management system and building management software centralizes building data and improves energy efficiency for reduced energy costs. Lucid is the leading software platform for managing building performance