Drools - Drools introduces the Business Logic integration Platform which provides a unified and integrated platform for Rules, Workflow and Event Processing.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Esper.io - Esper is the first platform built for Android enterprise device management and DevOps, so you can deploy devices, manage apps, and secure your fleet.
ioBroker - flexible and modular application for the IoT and Smarthome
Cabin - Family App - A family app that lets you share, plan & stay connected.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation