Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Gamesalad - GameSalad is a game development platform for iOS, Android and HTML5.
Pivotal - Pivotal Software provides enterprise PaaS-based solutions.
AppyPie AppMakr - AppMakr is a browser-based platform designed to make creating your own iPhone app quick and easy.
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.
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.