Adept Scale - Automated scaling of Heroku dynos with this Add-on
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!
djangae - The best way to run Django on Google App Engine
GoodBarber - GoodBarber is a mobile app creation platform.
React Native - A framework for building native apps with React
Mobidonia - Native mobile app builder for iOS, Android & Apple Watch