Unpack a browser type and version from the useragent string

Detect Node.JS (as opposite to browser environment). ESM modification

Detect if the browser supports passive events

Classify GPU's based on their benchmark score in order to provide an adaptive experience.

Detect device type and render your component according to it

Detect if a device is mouse only, touch only, or hybrid

Improved typeof detection for node.js and the browser.

Better `os.arch()` for node and the browser -- detect OS architecture

Charset Detector - Detect the encoding and language of text files - Use it in the browser, with Node.js, or via CLI

Simplify detecting your browser

Node.js implementation of port detector

Detect whether a terminal supports hyperlinks

Detect the appearance of an element in the browser DOM

Detects if a file exists and returns the resolved filepath.

Detect Node.JS (as opposite to browser environment) (reliable)

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

Lightweight browser detector

Detect the indentation of code

Device detection (phone, tablet, desktop, mobile grade, os, versions)

detect available port