The Thickbox module is a wrapper for the jQuery plugin ThickBox.

Thanks to user contributions the module provides automated integration
with ImageField (CCK) + ImageCache and the Image module.

#D7CX This module got into core and will only be available as a back-port version for Drupal 6.

Provides vertical tabs like http://drupal.geek.nz/static/node-form/default/summaries2.html on the node add form.

This module provides the following features:

A wrapper module around the jQuery UI effects library that lets module developers add swooshy, swishy effects to their code.

The jquery_plugin module provides miscellaneous jQuery plugins, which can be loaded from any module or theme by calling jquery_plugin_add($plugin) in Drupal 6 or drupal_add_library('jquery_plugin', $plugin) in Drupal 7. The Drupal 6 version supports jQ, a jQuery plugin registry.

Currently bundled plugins (for Drupal 7) include:

Allows to use client-side editors to edit content. It simplifies the installation and integration of the editor of your choice. This module replaces all other editor integration modules. No other Drupal module is required.

Wysiwyg module is capable to support any kind of client-side editor. It can be a HTML-editor (a.k.a. WYSIWYG), apseudo-editor (buttons to insert markup into a textarea), or even Flash-based applications. The editor library needs to be downloaded separately. Various editors are supported (see below).

This module facilitates an upgrade of jQuery in Drupal core and allows other contrib modules to rely on a newer jQuery version.

jQuery versions in Drupal core

Whether this module is necessary and which version of the module to use, depends on which version of jQuery you require.

"Stock" Drupal 5.x: jQuery 1.0.x (currently 1.0.4)
jQuery Update 5.x-1.x: jQuery 1.1.x (currently 1.1.2)
jQuery Update 5.x-2.x: jQuery 1.2.x (currently 1.2.6)

External Links is a small module used to differentiate between internal and external links. Using jQuery, it will find all external links on a page and add an external icon indicating it will take you offsite or a mail icon for mailto: links.

Configuration options: