Dojo saves you time, delivers powerful performance, and scales with your development process. Its the toolkit experienced developers turn to for building superior desktop and mobile web experiences.
The XMLHttpRequest specification defines an API that provides scripted client functionality for transferring data between a client and a server.
An add-on to the Prototype framework that includes animation framework, drag and drop, AJAX controls, DOM utilities, and unit testing.
As a flurry of interest in AJAX sweeps the Web, it's worthwhile to consider the design implications of this technology lest we end up with Skip AJAX in the future.