jQuery Stick 'em plugin makes items sticky as you scroll, to a point. Easy to implement and flawless to the point of perfection, this is indeed a very useful plugin.
prettyCheckable plugin replaces the default checkboxes and radio inputs for better looking ones.
jQuery.fluxoModal is a jQuery plug-in similar to lightbox. It can highlight any kind of html element inside an html modal window, blurring the background using html5 canvas, CSS3 animations and a crossbrowser fallback for IE.
Socialist is a social feed plugin that combines multiple social media feeds in one place. Use it to combine content and create a social wall from Facebook, Twitter, LinkedIn, YouTube, Pinterest, Flickr, Tumblr, Craiglist RSS and other social networks.
Socialite provides a very easy way to implement and activate a plethora of social sharing buttons — any time you wish.
On document load, on article hover, on any event! Socialite won't cause document rendering to hang while waiting for 50kb of social media.
Foggy is a jQuery plugin for blurring page elements. It supports IE (8 and up), Firefox, Safari and Chrome.
Foggy by default uses the "-webkit-filter: blur" CSS attribute. If the browser doesn't support it, Foggy falls back to a manual blur. It makes several copies of the selected HTML element. It adds transparency to all copies and moves each of them by small amount, thus creating the blur effect.
jQuery.threesixty is a jQuery plugin that turns an array of images into a 360 degrees interactive view that can be rotated.
Cloud Zoom is a free jQuery image zoom plugin, a comparable alternative to products such as Magic Zoom. Compared to the popular jQZoom plugin, Cloud Zoom is smaller, has more features and more robust compatability across browsers.
Also Picbox WordPress plugin is now available.
By combining support for a wide range of media with gorgeous skins and a user-friendly API, Lightview aims to push the Lightbox concept as far as possible.
Allofthelights.js is a jQuery plugin that allows to switch off the light, for your videos to stand out.
jquery.transform.js adds 2D transform capabilities to jQuery css() and animate() functions.
ChillBox is a simple, unobtrusive script used to overlay images on top of the current page inspired by Lightbox.
Unlike other lightbox versions, ChillBox does not require the use of images for buttons and is fully rendered using jQuery. ChillBox is fully customisable and you can change the range of options to create a unique version of ChillBox that works with a website theme.
Quicksand is a jQuery plugin for reordering and filtering items with a nice shuffling animation.
BigText is a jQuery plugin, calculates the font-size and word-spacing needed to match a line of text to a specific width.
At its simplest, the BigText jQuery plugin takes a single element and sizes the text inside of its child's to fit the width of the parent element. Gives the text that lovely vertical alignment.
NobleCount is a customizable jQuery plugin for a more improved counting of the remaining characters, and handling of resulting behaviors, of a text entry object, e.g. input textfield, textarea. Also, NobleCount supports pre-existing text within the text object and jQuery chaining.
Isotope is an exquisite jQuery plugin for magical layouts. Enables filtering, sorting, and dynamic layouts.
Avgrund is a jQuery plugin for modal boxes and popups. It uses interesting concept showing depth between popup and page. It works in all modern browsers and gracefully degrade in those that do not support CSS transitions and transformations (e.g. in IE 6-9 has standard behavior).
tiltShift.js is a jQuery plugin that uses the CSS3 image filters to replicate the tilt-shift effect. This is a proof of concept and currently only works in Chrome & Safari 6
BookBlock is a jQuery plugin that can be used for creating booklet-like components that allow a "page flip" navigation. Any content can be used, such as images or text. The plugin transforms the structure only when needed (i.e. when flipping a page) and uses some overlays as shadow for the pages to create more realism.
The timepicker addon adds a timepicker to jQuery UI Datepicker, thus the datepicker and slider components (jQueryUI) are required for using any of these. In addition all datepicker options are still available through the timepicker addon.
Freetile is a plugin for jQuery that enables the organization of webpage content in an efficient, dynamic and responsive layout.
It can be applied to a container element and it will attempt to arrange it's children in a layout that makes optimal use of screen space, by "packing" them in a tight arrangement.
Hero Carousel is a jQuery carousel plugin with 100% width and previews of next/previous slide. Also it has auto slide functionality.