jqTree is a jQuery tree plugin with many options and functions. Also it has drag & drop support for tree nodes.
Features
Dropzone.js is a light weight JavaScript library for jQuery that turns an HTML element into a dropzone. This means that a user can drag and drop a file onto it, and the file gets uploaded to the server via AJAX. It supports image previews and shows nice progress bars.
jQuery.kinetic is a simple plugin which adds smooth drag scrolling with gradual deceleration to containers.
Here you ll learn how to create a template with a fullscreen grid of images and content areas.
The idea is to have a draggable grid that shows boxes of thumbnails and menu like items. Once clicked, the thumbnail will expand to the full size image and the menu item box will expand to a fullscreen content area.
Gridster is a jQuery plugin that allows building intuitive draggable layouts from elements spanning multiple columns. You can even dynamically add and remove elements from the grid. It is on par with sliced bread, or possibly better.
Cyclotron is a simple jQuery plugin for dragging 360° panoramas (cylindrical projection) and other seamlessly looping images around.
HTML5 Sortable is a jQuery plugin to create sortable lists and grids using native HTML5 drag and drop API.
Nestable is an interactive hierarchical list. You can drag & drop to rearrange the order. It even works well on touch-screens.
jsTree is a javascript based, cross browser tree component. It is packaged as a jQuery plugin. jsTree is absolutely free.
Overscroll is a jQuery plug-in that mimics the iphone/ipad scrolling experience in a browser. The plug-in adds a draggable drift to overflowed DOM elements as well as a set of fading 'thumbs'. OverScroll runs best on Safari 5+, Chrome 5+, and Firefox 3+ but should run just fine on most modern browsers.
TableDnD is a jQuery plugin that simply adds drag & drop functionality to tables.
This TableDnD plugin allows the user to reorder rows within a table, for example if they represent an ordered list . Individual rows can be marked as non-draggable and/or non-droppable. Rows can have as many cells as necessary and the cells can contain form elements.
FullCalendar is a jQuery plugin that provides a full-sized, drag & drop calendar like the one below. It uses AJAX to fetch events on-the-fly for each month and is easily configured to use your own feed format (an extension is provided for Google Calendar). It is visually customizable and exposes hooks for user-triggered events (like clicking or dragging an event)