Twitter and GitHub went abuzz when Benoit Vallon showed his single codebase for a Mobile, Desktop (NW) and Website App.
Dave Sibiski went even further adding support for Android.

This is showing us React's (and React Native) philosophy at its best.

react-native-nw-react-calculator on GitHub

This project shows how the source code can be architectured to run on multiple devices. As of now, it is able to run as:

• iOS & Android Apps (based on react-native)
• a Desktop App (based on NW)
• a Website App in any browser (based on react)