RIBs
Build cross-platform apps that have similar architecture, enabling iOS and Android teams to cross-review business logic code (by Uber)
19 Alternatives To RIBs
Create React Native App
Create a React Native app on any OS with no build config
JUniversal
A new, Java-based approach to cross-platform mobile apps (used by Google Inbox and Google Spreadsheets)
NativeBase
Experience the awesomeness of React Native without the pain
Vue Native
A framework to build Native Mobile apps using JavaScript.