Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Bizness Apps - Create your own app or become a reseller and build apps for others
Parse - Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
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!
Kumulos - Made for the business of mobile app development, Kumulos helps you manage the commercial and technical performance of Apps, so you drive a better outcome for your clients.
Dropsource - Mobile development platform for building native iOS & Android apps