Notes"Scenario: a chrome and a content application are aware of their respective existence and wish to communicate. Communication should be able to flow both ways."Unfurl
Notes"A XUL app being billed as “Ajax” is just as laughable as a Flex or XAML app suddenly growing the same moniker. That it’s Mozilla’s walled-garden language doesn’t really excuse the gaffe."Unfurl
Notes"Rather than using cross-browser DHTML like Writely, ajaxWrite uses Extensible User Interface Language (XUL), which means it will only work on Mozilla browsers like Firefox. Alex Russell believes that advertising such an application using the AJAX name isUnfurl
XML.com: XUL-Enhanced Web Apps