jquery-ahm is a replacement for $.ajax. With $.ajax, every ajax request needs a callback, resulting in a lot of javascript. $.ahm reduces javascript code by letting the response data define the actual callbacks.
Create your own "requires-jQuery-to-run" bookmarklet!
A jQuery plugin allowing elements to follow the user as they scroll a page
Chosen is a javsacript plug-in that makes long, unwieldy select boxes much more user-friendly. It is currently available in both jQuery and Prototype flavors.
jQuery solution to parse RSS feeds
Reel is a jQuery plugin which takes an image tag and makes it a live "projection" of pre-built animation frames sequence. Its aim is to provide a 360° view of something or someplace. Great alternative to widely used Flash and Java techniques.