This is a super-cool jQuery plugin for scroll animations. You can define tweens and animations that are triggered when an element comes into view, or on specific scroll points.
by John Polacek
a simple jQuery plugin that allows you to add a dynamically re-sized, slideshow-capable background image to any page or element.
by Scott Robbin
This little library is for presenting great looking dialog windows and notifications. Simply use CSS to customize and it plays nicely with third-party libraries.
by Fabien Doiron
4. Fancy Input
A powerful slider for selecting value ranges, supporting dates and more.
by Guillaume Gautreau
ScrollUp is a lightweight jQuery plugin to create a customizable “Scroll to top” feature that will work with any website, with ease.
by Mark Goodyear
Easy, object oriented client side graphs for designers and developers. The library supports 6 chart types that are animated and fully customizable.
by Nick Downie
Sticky is a jQuery plugin that gives you the ability to make any element on your page always stay visible.
by Anthony Garand
Which plugin do you find most useful?