Provides a collection of scripts using JQuery or Prototype/Script.aculo.us.

Offers a collection of scripts using Ajax.

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

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

Provides a component to show data in a treegrid.

A collection of free ajax scripts and tutorials.

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

Provides a collection of jQuery and mootools plugins.

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

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