Mathjs
An extensive math library for JavaScript and Node.js
Babel
Babel is a compiler for writing next generation JavaScript.
Timezone Js
Timezone-enabled JavaScript Date object. Uses Olson zoneinfo files for timezone data.
Inversify Js
A powerful and lightweight inversion of control container for JavaScript & Node.js apps powered by TypeScript.
Bignumber.js
A JavaScript library for arbitrary-precision decimal and non-decimal arithmetic
Nerdamer
a symbolic math expression evaluator for javascript
Tiny Color
Fast, small color manipulation and conversion for JavaScript
Placeholders.js
A JavaScript polyfill for the HTML5 placeholder attribute
jQuery Number
Easily format numbers for display use. Replace numbers inline in a document, or return a formatted number for other uses.
Selectivizr
Selectivizr is a JavaScript utility that emulates CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8.
Xdate
A Modern JavaScript Date Library
Sugar
A Javascript library for working with native objects.
Classing Js
Brings the world of classical OOP to javascript
Ratio.js
Rational numbers for Javascript
CSS Parent Selector
CSS4 parent selector based on jQuery
Decimal.js
An arbitrary-precision Decimal type for JavaScript
Placeholder Shiv
Tiny polyfill for the placeholder form element attribute. Requires Prototype.js.