Download: http://ui.jquery.com/download_builder/ (don’t forget UI Core also)
Demos and download: http://medienfreunde.com/lab/innerfade/
The jQuery BlockUI Plugin lets you simulate synchronous behavior when using AJAX, without locking the browser. When activated, it will prevent user activity with the page (or part of the page) until it is deactivated. BlockUI adds elements to the DOM to give it both the appearance and behavior of blocking user interaction.
Demos and download: http://www.malsup.com/jquery/block/
Tablesorter is a jQuery plugin for turning a standard HTML table with THEAD and TBODY tags into a sortable table without page refreshes. Tablesorter can successfully parse and sort many types of data including linked data in a cell.
Demos and download: http://tablesorter.com/docs/
jTemplates makes rendering the JSON result of ASP.NET AJAX web services trivial. If you’re using jQuery with ASP.NET AJAX, jTemplates is a perfect companion to simplify that common task.
Demos and download: http://plugins.jquery.com/project/jTemplates
Creates enhanced Suckerfish-style dropdown menus from existing pure CSS dropdown menus. Works with multiple-tiered menus and multiple menus per page. Great for both drop-down menus and and multi-tier horizontal nav bars. Very light-weight and degrades gracefully.
It works by attaching to a table, list, or set of paragraphs, displaying a search field above or below the targeted elements, and then filtering those elements in real-time as characters are typed in the search field.
Demos and download: http://rikrikrik.com/jquery/quicksearch/
For more plugins.jquery.com