Speaking for myself, I think that this OpenLaszlo looks as if it can offer up some amazing Web experiences. Take a look!

OpenLaszlo is the leading open source platform for the development and delivery of rich Internet applications on the World Wide Web.

Applications developed on OpenLaszlo provide a dramatically improved online user experience featuring advanced interfaces delivered on a single Web page. By bringing true application behavior to the Web, OpenLaszlo makes a new generation of online communications, commerce and content services viable for the first time. [Read the rest]