Xdate
A Modern JavaScript Date Library
Babel
Babel is a compiler for writing next generation JavaScript.
Timezone Js
Timezone-enabled JavaScript Date object. Uses Olson zoneinfo files for timezone data.
Placeholders.js
A JavaScript polyfill for the HTML5 placeholder attribute
Poly
Small, fast, awesome. The only ES5-ish set of polyfills (shims) you can mix-and-match because they're individual AMD modules.
Selectivizr
Selectivizr is a JavaScript utility that emulates CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8.
jQuery Number
Easily format numbers for display use. Replace numbers inline in a document, or return a formatted number for other uses.
Auto Numeric
autoNumeric is a jQuery plugin that automatically formats currency (money) and numbers as you type on form inputs. It supports most International numeric formats and currency signs including those used in Europe, North and South America, Asia and India (lakhs**).
Augment.js
Modern JavaScript in your IE
Nerdamer
a symbolic math expression evaluator for javascript
Inversify Js
A powerful and lightweight inversion of control container for JavaScript & Node.js apps powered by TypeScript.
Ratio.js
Rational numbers for Javascript
Svgeezy
Allows for automatic Image fallbacks for browsers that can't handle SVGs
Extract Values
A simple helper to extract values from a string based on a pattern.
Big.js
A small, fast JavaScript library for arbitrary-precision decimal arithmetic.
CSS Parent Selector
CSS4 parent selector based on jQuery
Sprintf.js
sprintf.js is a complete open source JavaScript sprintf implementation.