Joyride is an easy to configure jQuery site tour wizard. Demo
A very simple and highly customizable jQuery plugin for stacking stuff. Demo
jQuery plugin that allows you to display an animated horizontal or vertical progress meter. Demo
A jQuery Plugin to replace Javascript's window.alert(), window.confirm() and window.prompt() functions Demo
A secondary content panel that folds flat, powered by CSS Transformations and jQuery. Demo
Spectro is jQuery plugin with awesome features for visual, modular content editing Demo
DataTables is a plug-in for the jQuery Javascript library
The jQuery Foundation announce the 1.0 release of the Globalize project
