Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Kami Home - Kami Home makes it practical and effortless to guard and stay connected with the things, such as family, friends, pets, offices, accessories, and all the others that you love the most.
ioBroker - flexible and modular application for the IoT and Smarthome
HomeMate - HomeMate is a smart home platform through which you can effortlessly control, secure, and monitor your home from anywhere around the globe.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
LView - LView is a video monitoring software for DVR and IPC, developed in the market by Zhubo Inc.