MultiCheck

jQuery plugin for convert multiple select to set of checkboxes.

jQuery.selectimus

Selectimus jQuery plugin allows to replace standart selects in each browser by identical ones.

Cropsy – Image cropper through a moveable viewport

cropsy is a jQuery plugin for creating a draggable and zoomable cropper window around an attached image, similar to Twitter’s profile image selector. Its name comes from the Staten Island urban legend of Cropsey. Coder beware.

jQuery cursor

jQuery plugin to manipulating cursor inside text and textarea fields

jQuery ListBoxSelector

jQuery plugin for maintaining a list of options with two list boxes. This is an early beta–comments are welcome.

select2list

jQuery plugin for creating a list of selectable items out of an HTML select element.

jQuery Simple Tagger

jQuery plugin to ransforms a into a cross-browser input field to manage tags

jQuery shuttle

Binds select and button elements into a coherent shuttle element

Toggle Dropdown Options

Hides and shows in a elements in all browsers. (Other methods do not work in all browsers!)