Typecast.js
Typecast.js :: Solving the simple problems
CSS3 Pie
A behavior for Internet Explorer allowing it to recognize and render various CSS3 box decoration properties
Object.observe
Object.observe polyfill/shim trying to be compliant
Extract Values
A simple helper to extract values from a string based on a pattern.
CSS Parent Selector
CSS4 parent selector based on jQuery
Hitch
A lightweight engine that allows you to hitch new capabilities to the browser (prollyfill).
Args.js
Create javascript functions with optional, default, grouped and named parameters.
Klass
a utility for creating expressive classes in JavaScript
Moment
Parse, validate, manipulate, and display dates in javascript.
Augment.js
Modern JavaScript in your IE
Taggd
A tool to show and add tags to images
Date
Date() for humans
Es6 Shim
ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines
Dayjs
⏰ Day.js 2KB immutable date library alternative to Moment.js with the same modern API
Nerdamer
a symbolic math expression evaluator for javascript
Yepnope.js
An Asynchronous Conditional Resource Loader
Length.js
📏 JavaScript library for length units conversion.