This is awesome. The webstart demo downloaded in entirety and started up in the same time as acrobat takes to startup itself on some systems I have used :-)<p>But this is seriously nice because it has a commercial friendly license (MPL) and (at least on the surface) looks like it gives everyone an option other than insisting users have a native PDF viewer installed - for users who don't you can either render it on the server and serve up images, or you can launch it in an applet.