Typecast.js
Typecast.js :: Solving the simple problems
Selectivizr
Selectivizr is a JavaScript utility that emulates CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8.
Classing Js
Brings the world of classical OOP to javascript
Char Funk
a Unicode character utility for JavaScript
Placeholder Shiv
Tiny polyfill for the placeholder form element attribute. Requires Prototype.js.
Object.observe
Object.observe polyfill/shim trying to be compliant
Es6 Shim
ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines
Core Lib
A port of the Ruby 1.9.3 corelib to coffeescript/javascript/node that conforms to rubyspec.org.
Taggd
A tool to show and add tags to images
Tiny Color
Fast, small color manipulation and conversion for JavaScript
CSS3 Pie
A behavior for Internet Explorer allowing it to recognize and render various CSS3 box decoration properties
Args.js
Create javascript functions with optional, default, grouped and named parameters.
Bignumber.js
A JavaScript library for arbitrary-precision decimal and non-decimal arithmetic
Css3 Finalize
Tired of adding prefix for each broswer when it comes to the new css3 attributes?
Length.js
📏 JavaScript library for length units conversion.
Store
A better way to use localStorage and sessionStorage
Numeral
A javascript library for formatting and manipulating numbers.