Nanobox - The ideal platform for developers. Focus on code, not config.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Heroku - Agile deployment platform for Ruby, Node.js, Clojure, Java, Python, and Scala. Setup takes only minutes and deploys are instant through git. Leave tedious server maintenance to Heroku and focus on your code.
ioBroker - flexible and modular application for the IoT and Smarthome
Pivotal - Pivotal Software provides enterprise PaaS-based solutions.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation