OpenLaszlo

OpenLaszlo: "The OpenLaszlo platform allows developers to create applications with the rich user interface capabilities of desktop client software and the instantaneous no-download Web deployment of HTML. These applications run on all leading Web browsers on all leading desktop operating systems from a single XML code base. Earthlink, Yahoo, Behr Paint, La Quinta and any many others rely on OpenLaszlo to deliver state-of-the-art applications serving millions of users. The OpenLaszlo platform is open source and free for development and deployment."