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!)

jQuery editable select box

This plugin allows you to make a select box editable like a text box while keeping it’s select-option features

SelecTable

A jQuery plugin to easily create a Bootstrap-friendly table with selectable rows.

jQuery selectPool

A simple plugin allowing you to hook numerous select inputs together in sweet harmony.

jQuery Jelect

A functional wrapper for a stylized select.