Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
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.
Dropsource - Mobile development platform for building native iOS & Android apps
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
GoodBarber - GoodBarber is a mobile app creation platform.