Chosen is a jQuery plugin that makes long, unwieldy select boxes much more user-friendly.
jQuery Chosen gives user-friendly dropdown (select box) to the user. Also it simplifies the multiselect feature of select input tag and gives you more understanding functionality. You can configure it for sections in select box also.
E.g. Sections like Continental wise country list.
An all-in-one wizard plugin that is extremely flexible, compact and feature-rich.
jQuery Steps is a smart UI component which allows you to easily create wizard-like interfaces. This plugin groups content into sections for a more structured and orderly page view. Furthermore, it is as simple as 1-2-3 to add plugins such as jQuery Validation which can prevent step changing or submission. Check out the demos and get a first-hand impression!
This jQuery plugin makes simple clientside form validation easy, whilst still offering plenty of customization options. It makes a good choice if you’re building something new from scratch, but also when you’re trying to integrate something into an existing application with lots of existing markup. The plugin comes bundled with a useful set of validation methods, including URL and email validation, while providing an API to write your own methods. All bundled methods come with default error messages in english and translations into 37 other languages.