Arctext Curving Text with CSS3 and jQuery http://tympanus.net/codrops/2012/01/24/arctext-js-curving-text-with-css3-and-jquery/ MIT aSlyder Highly versitile slideshow engine (by the creator of JAM) http://www.avant5.com/aslyder GNU Avgrund Modal Modal pop ups http://labs.voronianski.com/jquery.avgrund.js/ MIT Countdown A simple JavaScript API for producing an accurate, intuitive description of the timespan between two Date instances. http://countdownjs.org/ MIT FitText Use this plugin on your fluid or responsive layout to achieve scalable headlines that fill the width of a parent element. http://fittextjs.com/ WTFPL Gridster Build intuitive draggable layouts from elements spanning multiple columns http://gridster.net/ MIT iCheck Add custom styling to radio buttons and check boxes, even in IE6 http://damirfoy.com/iCheck/ MIT jQuery Countdown A jQuery plugin that sets a div or span to show a countdown to a given time. http://keith-wood.name/countdown.html MIT jQuery Knob Creates interactive dials http://anthonyterrien.com/knob/ MIT,GPL Lettering jQuery plugin for radical web typography http://letteringjs.com/ WTFPL Tubular Display a Youtube video as webpage background http://www.seanmccambridge.com/tubular/ MIT Typeahead Autocomplete plugin by Twitter http://twitter.github.io/typeahead.js/ MIT jQuery The jQuery core. Includes jQuery Migrate. http://www.jquery.com MIT jQuery Schedule http://plugins.jquery.com/schedule/ Query Schedule provides scheduled/deferred actions on DOM elements MIT jQuery Suggest http://polarblau.github.io/suggest/ A simple inline autosuggest jQuery plugin MIT jQuery Hotkeys https://github.com/jeresig/jquery.hotkeys jQuery Hotkeys lets you watch for keyboard events anywhere in your code supporting almost any key combination. MIT jQuery Form http://malsup.com/jquery/form/ Allows you to easily and unobtrusively upgrade HTML forms to use AJAX. MIT jQuery Color https://github.com/jquery/jquery-color jQuery plugin for color manipulation and animation support. MIT jQuery Masonry http://masonry.desandro.com/ Masonry is a JavaScript grid layout library. MIT Iris A(n awesome) Color Picker https://github.com/automattic/Iris GPL ThickBox ThickBox powers the modal lightboxes used in the WordPress admin, including the post editor's "Media" button (prior to Wordpress 3.5 only) and the "Details" links on the Plugin "Search Results" screen. http://codex.wordpress.org/ThickBox GPL Jcrop Jcrop is the quick and easy way to add image cropping functionality to your web application. http://deepliquid.com/content/Jcrop.html MIT MediaElement HTML5 video and audio made easy. One file. Any browser. Same UI. (Included with WP 3.6+ only) http://mediaelementjs.com/ MIT jQuery UI Core http://jqueryui.com/ jQuery UI is a curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. MIT jQuery UI Widget http://jqueryui.com/widget/ Create stateful jQuery plugins using the same abstraction as all jQuery UI widgets. MIT jQuery UI Mouse http://api.jqueryui.com/mouse/ Similar to jQuery.Widget, the mouse interaction is not intended to be used directly. It is purely a base layer for other widgets to inherit from. MIT jQuery UI Accordion http://jqueryui.com/accordion Displays collapsible content panels for presenting information in a limited amount of space. MIT jQuery UI Autocomplete http://jqueryui.com/autocomplete Enables users to quickly find and select from a pre-populated list of values as they type, leveraging searching and filtering. MIT jQuery UI Slider http://jqueryui.com/slider Drag a handle to select a numeric value. MIT jQuery UI Tabs http://jqueryui.com/tabs A single content area with multiple panels, each associated with a header in a list. MIT jQuery UI Sortable http://jqueryui.com/sortable Reorder elements in a list or grid using the mouse. MIT jQuery UI Draggable http://jqueryui.com/draggable/ Allow elements to be moved using the mouse. MIT jQuery UI Droppable http://jqueryui.com/droppable/ Create targets for draggable elements. MIT jQuery UI Selectable http://jqueryui.com/selectable/ Use the mouse to select elements, individually or in a group. MIT jQuery UI Position http://jqueryui.com/position/ Position an element relative to the window, document, another element, or the cursor/mouse. MIT jQuery UI Datepicker http://jqueryui.com/datepicker/ Select a date from a popup or inline calendar. MIT jQuery UI Resizable http://jqueryui.com/resizable/ Change the size of an element using the mouse. MIT jQuery UI Dialog http://jqueryui.com/dialog/ Open content in an interactive overlay. MIT jQuery UI Button http://jqueryui.com/button/ Enhances standard form elements like buttons, inputs and anchors to themeable buttons with appropriate hover and active styles. MIT jQuery UI Effects http://api.jqueryui.com/category/effects-core/ Functionality provided by jquery.ui.effect.js. MIT jQuery UI Effects - Blind http://api.jqueryui.com/blind-effect/ The blind effect hides or shows an element by wrapping the element in a container, and "pulling the blinds" MIT jQuery UI Effects - Bounce http://api.jqueryui.com/bounce-effect/ The bounce effect bounces an element. When used with hide or show, the last or first bounce will also fade in/out. MIT jQuery UI Effects - Clip http://api.jqueryui.com/clip-effect/ The clip effect will hide or show an element by clipping the element vertically or horizontally. MIT jQuery UI Effects - Drop http://api.jqueryui.com/drop-effect/ The drop effect hides or shows an element fading in/out and sliding in a direction. MIT jQuery UI Effects - Explode http://api.jqueryui.com/explode-effect/ The explode effect hides or shows an element by splitting it into pieces. MIT jQuery UI Effects - Fade http://api.jqueryui.com/fade-effect/ The fade effect hides or shows an element by fading it. MIT jQuery UI Effects - Fold http://api.jqueryui.com/fold-effect/ The fold effect hides or shows an element by folding it. MIT jQuery UI Effects - Highlight http://api.jqueryui.com/highlight-effect/ The highlight effect hides or shows an element by animating its background color first. MIT jQuery UI Effects - Pulsate http://api.jqueryui.com/pulsate-effect/ The pulsate effect hides or shows an element by pulsing it in or out. MIT jQuery UI Effects - Scale http://api.jqueryui.com/scale-effect/ Shrink or grow an element by a percentage factor. MIT jQuery UI Effects - Shake http://api.jqueryui.com/shake-effect/ Shakes the element multiple times, vertically or horizontally. MIT jQuery UI Effects - Slide http://api.jqueryui.com/slide-effect/ Slides the element out of the viewport. MIT jQuery UI Effects - Transfer http://api.jqueryui.com/transfer-effect/ Transfers the outline of an element to another element. MIT Backbone JS http://backbonejs.org/ Gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface. MIT Underscore JS http://underscorejs.org/ a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects. It's the tie to go along with jQuery's tux, and Backbone.js's suspenders. MIT Simple AJAX Code-kit http://code.google.com/p/tw-sack/ A simple set of code to allow you to put AJAX into your webpages with none of the fuss or overhead of other packages.