xhr-sniffer
🔨 Sniff HTTP requests making by XHR in the browser or HTTP module in Node.js
sniffr
Browser, os and device detection
uakit.js
Yet another browser-sniffing library
which-browser
Browser sniffing tool and UA parser. Browser sniffing gone too far — A useragent parser library for JavaScript
is-webview
JavaScript library to indicate if we are dealing with a WebView or a Web page.