Xdate
A Modern JavaScript Date Library
Big.js
A small, fast JavaScript library for arbitrary-precision decimal arithmetic.
Tiny Color
Fast, small color manipulation and conversion for JavaScript
Timezone Js
Timezone-enabled JavaScript Date object. Uses Olson zoneinfo files for timezone data.
jQuery Number
Easily format numbers for display use. Replace numbers inline in a document, or return a formatted number for other uses.
Bignumber.js
A JavaScript library for arbitrary-precision decimal and non-decimal arithmetic
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**).
Ratio.js
Rational numbers for Javascript
Extract Values
A simple helper to extract values from a string based on a pattern.
Inversify Js
A powerful and lightweight inversion of control container for JavaScript & Node.js apps powered by TypeScript.
Sprintf.js
sprintf.js is a complete open source JavaScript sprintf implementation.
Klass
a utility for creating expressive classes in JavaScript
Args.js
Create javascript functions with optional, default, grouped and named parameters.
Typecast.js
Typecast.js :: Solving the simple problems
Nerdamer
a symbolic math expression evaluator for javascript
Classing Js
Brings the world of classical OOP to javascript
Char Funk
a Unicode character utility for JavaScript