CSS4 parent selector based on jQuery
Tiny polyfill for the placeholder form element attribute. Requires Prototype.js.
A simple helper to extract values from a string based on a pattern.
Typecast.js :: Solving the simple problems
JS string formatter that supports objects, currency, date/time, decimals, and more supports easy extension and garbage collection ... goes far beyond sprintf approach.
A lightweight engine that allows you to hitch new capabilities to the browser (prollyfill).
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**).
Tired of adding prefix for each broswer when it comes to the new css3 attributes?