“The jQuery Taconite Plugin allows you to easily make multiple DOM updates using the results of a single AJAX call. It processes an XML command document that contain instructions for updating the DOM.”
#ajax
Lunascript
“an in-house programming language for writing rich web applications in about 10% of the time and code you can today.” Goes from a declarative language into a complied front/backend web 2.0-style application.
WordPress JSON API
Plugin to add a simple JSON-based API to a WordPress installation. Allows for all sorts of potential AJAX loveliness.
The Ultimate jQuery List
A really huge list of jQuery plugins and examples, with screenshots where possible.
Quick Lookup
Nice AJAX-powered tool for quickly looking up PHP, MySQL, JS and CSS functions etc from their respective references.
WireIt
A JavaScript wiring library for building a UI like Yahoo Pipes.
jQuery Edit In Place (JEIP)
Sweet jQuery plugin that provides edit in place functionality a la Flickr. Very nicely done and flexible.
Creating a Dynamic Poll with jQuery and PHP
Creating a Dynamic Poll with jQuery and PHP
“In this tutorial we’ll create a poll using PHP and XHTML, then make use of some jQuery Ajax effects to eliminate the need for a page refresh, and to give it a nice little bit of animation.”