ua-parser is a port to node.js of BrowserScope's user agent string parser.

The crux of the original parser--the data collected by Steve Souders over the years--has been extracted into a separate JSON file so as to be reusable as is by implementations in other programming languages.

ua-parser is just a small wrapper around this data.

var uaParser = require('ua-parser');
var ua = uaParser.parse(navigator.userAgent);

console.log(ua.tostring());
// -> "Safari 5.0.1"

console.log(ua.toVersionString());
// -> "5.0.1"

console.log(ua.toFullString());
// -> "Safari 5.0.1/Mac OS X"

console.log(ua.family);
// -> "Safari"

console.log(ua.major);
// -> 5

console.log(ua.minor);
// -> 0

console.log(ua.patch);
// -> 1

console.log(ua.os);
// -> Mac OS X

Your choice of MIT or Apache License, Version 2.0 for the JS code which is Copyright 2010 Tobie Langel.

The data contained in regexes.json is Copyright 2009 Google Inc. and available under the Apache License, Version 2.0.