Select Multiple is an user-friendly drop-in replacement for the standard select with multiple attribute activated.
Combo Select is a jQuery plugin that converts a select box into a searchable and keyboard friendly interface. Fallbacks to native select on mobile and ipad devices.
Zelect is a jQuery plugin to create custom
SumoSelect is a jQuery single/multi select plugin which can be used on almost any device. It can be fully customizable using simple css properties.
ArtDesignUI is a jQuery library for style control web elements (button, input, textarea, radio, checkbox, tab, layout, icons) that include 9 jQuery plugins.
A tutorial about building a script that is going to take an ordinary select element, and replace it with a better looking, markup powered version, while keeping all the functionality intact.
This is a nice animated custom select by using CSS3 and jQuery. CSS3 transitions and transforms are used to create this animated select.
Some inspiration for styling a custom version of the select element. There are many possibilities and ideas of how to let the user select a choice in style.
Flexselect is a jQuery plugin that turns regular select boxes into Quicksilver-like, flex-matching, incremental-finding controls.
Select or Die is a jQuery plugin to style/replace