There is ReactNative for Mac OSX. 
<a href="https:&#x2F;&#x2F;github.com&#x2F;ptmt&#x2F;react-native-desktop" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ptmt&#x2F;react-native-desktop</a><p>Not official though, but it&#x27;s getting some use out there.