detector-js
DetectorJS, zero-dependency platform/environment detector written in TypeScript
browser-dtector
A Javascript library to detect browser, version and platform
parse-user-agent
parseUserAgent is a function that takes a user agent and returns the browser name and version (and soon the operating system and version).
rowser
An experimental generator-based browser/os/bot detector with proxied API
platform-mini
Preload or Prefetch all resource for your web app,including im\js\css...