jQuery Google Analytics Custom Events : jQuery GACE is a plugin for tracking custom events in your web page. It provides a simple wrapper for some custom elements.
jQuery TextExt Plugin : TextExt is a plugin for jQuery which is designed to provide functionality such as tag input and autocomplete.
Sammy.js : Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
Morris.js : Morris.js is a lightweight library that uses jQuery and Raphaël to make drawing time-series graphs easy.
jquip : Smaller, Lighter, Faster, more modular jQuery - include only the parts you want! Don't use it, Don't include it.