Create ajax applications in which the navigation buttons are fully functional.

Mootools/Javascript Form Helper - Allows inline help for form input fields.

Highlight.js highlights syntax in code examples on blogs, forums and on any web pages.

A neat ajax based contact form with validation of required fields.

Here is the complete example code (form and script).

When you select item in first dropdown data in the second populates automatically

Very handy when you need to implement and autocompleter into an existing framework.

DHTML Form Controls built with the Yahoo User Interface Libary.

Purpose of this widget is to provide an UI for easy upload of files to a server.

It allows you to easily and unobtrusively upgrade HTML forms to use AJAX.

Tell the user what’s expected of him especially when filling out a form.

Very simple and clean form validation using the adobe spry framework.

Nice looking, structured, customizable, semantic, accessible and usable forms.

Simple to configure form validator built on prototype and scriptaculous libraries.

An UI control that allows for the rich formatting of text content using YUI.

An Autocomplete demo using Easy Ajax framework. Free source code to download.

Used to provide ULTIMATE flexibility in changing the appearance of form elements.

Created using moo tools. Provides a lightbox like overlay for google maps.

Resize the edit interface using the gray square. Move the interface using the gray area.

A demonstration of how to use ASP.NET AJAX to implement inline text editing.

It is a visual heatmap of clicks on a HTML page, showing hot and cold click zones.

Interactive charts anywhere with Google Web Toolkit!

A great way to build forms using the EXT Js framework.

A function to show an image loading message and subsequent fade-in of a photo.

Much like the GoogleX demo or the icons on the icon dock bar of a Mac OS X machine.

A fish eye dock menu using the moo tools javascript library. Easy to implement.

An unobtrusive AJAX contact form (works even with JavaScript disabled).

A demonstration of how Moo Tools can be used to generate custom form elements.

jquery.suggest, an alternative jQuery based autocomplete library.

AutoCompleter - using jQuery(Ajax), PHP and MySQL, Tutorial and demo included.