SwfJax
SwfJax is a new approach to asynchronous JavaScript and XML applications. It uses a lightweight SWF (Adobe's Small Web Format) engine to get XML data from the server and xPath (XML Path Language) to address a part of data it has retrieved. Data can be returned to Javascript as an Array SwfJax is absolutely FREE and comes bundled with the latest version of Adobe's "Flash / JavaScript Integration Kit" to deliver the best available integration experience.