Reapp - An easier, faster way to build apps with React and JavaScript.
Parse - Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
React Native - A framework for building native apps with React
AWS Amplify - JavaScript library for app development using cloud services
Onsen UI - HTML5 Hybrid Mobile App UI Framework - work with Angular, React, Vue, Meteor & pure JavaScript. Material & Flat design.
AWS Mobile Services - Storage, Analytics, Push Notif. & SMS Delivery SDKs