SimplePager – an easy jquery paging plugin

jQuery tabs – This is an easy to use and implement tab system

jQuery tooltip – Tooltips are one of the most important JavaScript widgets on the web. With this plugin you can easily implement tooltips on your site to guide your users.

jQuery expose – Expose is a JavaScript tool that exposes selected HTML elements on the page so that the surrounding elements will gradually fade out.

jQuery Overlay – This is a simple but powerfull jquery image overlay

jQuery scrollable – Simple but powerfull jquery scroll plugin

Tutorials

5 Ways to Make Ajax Calls with jQuery by Park

Building a jQuery-Powered Tag-Cloud by Dan Wellman

Create a Twitter-Like “Load More” Widget by David Walsh

Creating a Keyboard with CSS and jQuery by Vasili

Making a Content Slider with jQuery UI by Dan Wellman

10 Ways to Instantly Increase Your jQuery Performance by Giulio Bai

Using jQuery To Manipulate and Filter Data by Noah Hendrix

Fun With Canvas: Create a jQuery Graph Plugin by Siddharth

Create a Fun Tweet Counter With jQuery by Titus Stone

Multi-level Menus with jQuery and CSS by Jarel Remick

How to Integrate the jQuery Galleria and jCarousel Plugins by Bartek Stańkowski