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. Major providers of Web applications rely on OpenLaszlo to deliver state-of-the-art services for millions of users. The OpenLaszlo platform is open source and free for development and deployment.
More information available at:
http://www.openlaszlo.org
http://www.laszlosystems.com