SelectBoxIt allows you to replace ugly and hard to use HTML select boxes with gorgeous and feature rich drop downs. Twitter Bootstrap, jQueryUI and jQuery Mobile themes are supported right out of the box.
SelectBoxIt also provides first-class support for mobile, tablet, and desktop browsers, triggering the native "wheel" interface for mobile and tablet devices.
dropdown.dot.js is a jQuery plugin for super-flexible Dropdowns based on dot.js templates.
Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.
A jQuery plugin for transforming select inputs into drop-down lists with some simple expanding effects.
The idea is to transform a normal select input into something more appealing with a jQuery plugin. The expanding of the options will happen with a transition and parameters can be configured in a way to achieve unique effects.