Super tiny size multi-touch gestures library for the web. ใใใYou can touch this โ
a browser detector
JavaScript (engine) Version Updater
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the userโs browser.
Browser sniffing gone too far โ A useragent parser library for JavaScript
A platform detection library.
Useragent parser for Node.js, ported from browserscope.org