This article with the title 30 amazing css ajax form will explain the various techniques, tutorials, examples relating to the form.
38 Cool MooTools Plugins Developers Should Know
Mootools are one of the very famous Javascript Framework. With this we can write powerful, flexible, and cross-browser code with its elegant, well documented, and coherent API.
Contact Form + Contact Management System in PHP

Simple Contact Form Manager comes with easy web based installer. This is useful for managing your contact forms submission made on your website. This script comes with the Autoresponder settings where you can enable or disable the responder system and much more features included read below for details. Easy to integrate into any website but [...]
Skinnable Forms 2.0
Forms.JS is the successor of 6 separate controls for form styling, now consolidated in a single powerful component that will give you total control over the form elements on your page without any additional markup or sophisticated JavaScript. All you have to do is to add a single line of JavaScript in the head section [...]
40+ Stunning jQuery Plugins and Tutorials
We all love Javascript. With jQuery, it is now so easy to write really nice JavaScript effects. jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development
Sliding Labels ( Forms ) – jQuery and Mootools Version

Who wants to be successful in eCommerce doesn\’t comes around Forms. A very interesting approach to this, Tim Wright returns with “Form Design with Sliding Labels”. slidingLabels-form.jpg (5 KB)
5 Fresh jQuery Plugins Make You Love Your HTML Forms More

Working with HTML forms is really a nightmare because your forms always mess up. This post includes 5 newest and useful jQuery plugins that help you work with HTML forms better and love them more. jQuery_square.jpg (22 KB)
qkForm -jQtransform a like on MooTools
In the previous post i have featuring jQtransform and jQtransform theme. Today i will introduce you about qkForm (quick form). qkForm is Mootools plugin that have the same task as jQtransform.
jQuery UniqueField plugin

jQuery UniqueField plugin is ajax based tool who check availability of usernames, email addresses or etc. Use in your register, sign up or other forms.
GuestBook.XML 2.0 – The AJAX Guestbook

am happy to announce the release of the new version of Guestboox.XML – one of the few fully AJAX-driven guestbook components on the Internet, that will give your website friendly and cool Web 2.0 looks with its typical Web 2.0 application features – rounded corners for the form inputs and the entry boxes, smooth and [...]
Build your own Firefox like Multi Search Box for your site

There are many scripts available on net but couldn’t get one which are up to my expectations and my site requirements.
Strategies on How To Motivate Users to Sign Up Through Design

Be it web-based applications or online services, they are taking the Internet by storm. Many websites introducing these services are created and launched to get users to sign up and use the software (hopefully for a long-term).