AJAX Link City

jqModal

jqModal is a tool to help you display notices, dialogs, and modal windows in a web browser. Looks are controlled by standard and designer friendly HTML and CSS, independent of the javascript. jqModal is flexible and tiny -- it is the Swiss Army Knife of a great "general purpose" window plugin for jQuery.

http://dev.iceburg.net/jquery/jqModal/

jqForm

The jQuery Form Plugin allows you to easily and unobtrusively upgrade HTML forms to use AJAX. The main methods, ajaxForm and ajaxSubmit, gather information from the form element to determine how to manage the submit process. Both of these methods support numerous options which allows you to have full control over how the data is submitted. Submitting a form with AJAX doesn't get any easier than this!

http://www.malsup.com/jquery/form/

Great AJAX Gotchas Page

But the specifics of Ajax development are equally perilous to basic application design. The siren's call of the XMLHTTPRequest object can lead many brave scripters to a demise on the rocky shoals of browser limitations and bugs.

http://swik.net/User:alex/Alex+Bosworth's+Weblog/Rocky+Shoals+of+Ajax+Development/dc2q

AJAX Mistakes List

Ajax is also a dangerous technology for web developers, its power introduces a huge amount of UI problems as well as server side state problems and server load problems. I've compiled a list of the many mistakes developers using Ajax often make.

http://alexbosworth.backpackit.com/pub/67688