AJAX based file manager provided by FCKeditor developers. [Commercial]

Offers an open source PHP class library that allows to create Ajax applications using HTML, CSS, JavaScript, and PHP.

Provides an implementation of XSL-T in JavaScript for AJAX applications. Includes links for downloading.

An open source XMLHTTPRequest toolkit with PHP, Perl, and Python backends.

Provides a set of cross-browser DHTML components for building Ajax-based web interfaces. Distributed under both GPL and commercial license.

A showroom of nice looking simple downloadable DHTML and AJAX scripts.

Provices a cross browser javascript widgets library. Because it is technology agnostic it can be encapsulated in JSP, JSF, .Net or PHP graphic components.

Provides a collection of Ajax scripts to be implemented on a website.

Lightweight ajax logger. takes the place of alert() boxes for AJAX and DHTML applications.

Offers a collection of scripts using Ajax.