UA2OS Detect the OS from a User-Agent string. Install npm install --save ua2os Usage import ua2os from 'ua2os'; ua2os ( 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36' ); // => 'windows' License MIT © Fabio Spampinato