Tiny Color
Fast, small color manipulation and conversion for JavaScript
Big.js
A small, fast JavaScript library for arbitrary-precision decimal arithmetic.
Decimal.js
An arbitrary-precision Decimal type for JavaScript
Args.js
Create javascript functions with optional, default, grouped and named parameters.
Extract Values
A simple helper to extract values from a string based on a pattern.
Sprintf.js
sprintf.js is a complete open source JavaScript sprintf implementation.
Core Lib
A port of the Ruby 1.9.3 corelib to coffeescript/javascript/node that conforms to rubyspec.org.
jQuery Number
Easily format numbers for display use. Replace numbers inline in a document, or return a formatted number for other uses.
String.js
Extra JavaScript string methods.
Ratio.js
Rational numbers for Javascript
Char Funk
a Unicode character utility for JavaScript
Bignumber.js
A JavaScript library for arbitrary-precision decimal and non-decimal arithmetic
Classing Js
Brings the world of classical OOP to javascript
Typecast.js
Typecast.js :: Solving the simple problems
Date
Date() for humans
Datejs
Datejs is an open-source JavaScript Date Library.
Mathjs
An extensive math library for JavaScript and Node.js