jquery

slick – the last carousel you’ll ever need
Ben Alman » jQuery BBQ: Back Button & Query Library
Ben Alman » jQuery urlInternal: Easily test URL internal-, external-, or fragment-ness
Animating With Curves in jQuery – Heygrady
Ariel Flesler: jQuery.LocalScroll
ginader/HTML5-placeholder-polyfill
addyosmani/js-shapelib
Selectivizr – CSS3 pseudo-class and attribute selectors for IE 6-8
Lazy Load Plugin for jQuery
jQuery UI – Draggable Demos & Documentation

I’m going to use this on a project.