DevRocket is an iOS development panel plug-in that provides Adobe Photoshop with additional iOS specific tools and functionalities that are designed to assist key areas in iOS app design for both iPhone and iPad.

Utter bs law but there you go.

This plugin works exactly (at least in our intentions) as position plugin from jQuery UI. The need for this plugin raised from the fact that it doesn't work with hidden elements, and in some cases we prefered to position them before showing. Since we still use jQuery UI where we don't need to position anything hidden or any of the additional options, this plugin is built so that it can use the exact same option input, this way you just need to change your code from $().position({options...}); to $().hiddenPosition({options...});. The inverse is true unless you are using one of the few additional options, like viewport setting. Another big difference is that HiddenPosition works well even with position:relative elements, so take that into account if you need to go back to jQuery UI.

File Upload widget with multiple file selection, drag&drop support, progress bars and preview images for jQuery. Supports cross-domain, chunked and resumable file uploads and client-side image resizing. Works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads

Another slider. Yay!

Apparently bought and maintained by the original coder for woothemes.

Possible fancybox issue in IE7/8? The again, what does work in those browsers?

Tipped allows you to easily create beautiful tooltips using the jQuery Javascript library. Evolved from the popular Prototip library, Tipped takes tooltips to the next level by using HTML5 to give you full control over the look and feel of your tooltips.

some of the most popular plugins in February 2012

Fully customise WordPress edit screens with powerful fields. Field types include: Wysiwyg, text, textarea, image, file, select, checkbox, page link, post object, date picker, color picker and more! (think EE custom fields)

TouchSwipe is a jquery plugin to be used with jQuery on touch input devices such as iPad, iPhone etc.

slimScroll is a small (2.8KB) jQuery plugin that transforms any div into a scrollable area with a nice scrollbar stylable with css

Handlebars provides the power necessary to let you build semantic templates effectively with no frustration.
Mustache templates are compatible with Handlebars, so you can take a Mustache template, import it into Handlebars, and start taking advantage of the extra Handlebars features.

Sequence is the jQuery slider plugin with infinite style. It provides the complete functionality for a website slider without forcing you to use a set theme. In fact, Sequence has no in-built theme, leaving you complete creative control to build a unique slider using only CSS3

Page Scroller is a powerful JavaScript based smooth-scrolling navigation plugin that utilizes the robust jQuery library

Define custom scroll path and scroll bar. Awesome creative posibilities.

is a plugin for jQuery that adds a beautiful transition similar to real pages in a book or magazine for HTML5.

Fully responsive, touch enabled, mobile optimized jQuery slider plugin

Massive list of jquery plugins

Unclear if this fallbacks to native css3 animations. Must investigate.

Reorder and filter items with a nice shuffling animation.

TN3 Gallery is a jQuery image gallery with slideshow, transitions effects, multiple album options, CSS skinning and much more. It's compatible with all modern desktop and mobile browsers. It's the world's best photo gallery. Available as a wordpress plugin too now.

Chosen is a JavaScript plugin that makes long, unwieldy select boxes much more user-friendly.

Content slider, maybe use this for Motorola Solutions?

Probably the best one out there at the moment.

Custom layouts + masonry