Appcelerator Titanium - Appcelerator Open Source
Flutter.dev - Build beautiful native apps in record time 🚀
React Native - A framework for building native apps with React
Expo - The fastest way to build an iOS and Android app 📱
Onsen UI - HTML5 Hybrid Mobile App UI Framework - work with Angular, React, Vue, Meteor & pure JavaScript. Material & Flat design.
CodePush - CodePush is a cloud service that enables Cordova and React Native developers to deploy mobile app updates directly to their users' devices.