Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Crestron - Crestron is one of the leading innovative development platforms that provide you ultimate control and automation systems for the home, campus, or offices.
ioBroker - flexible and modular application for the IoT and Smarthome
inteliLIGHT - inteliLIGHT is a remote management system for street lighting that allows you to minimize power loss and operational cost via an automated system.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Kambo - Kambo is an all in one data-driven energy management system software that comes with the automated functions to minimize the power loss and making things to be done remotely.