It's simple: go with Adobe Flex - it simply rocks.

Hmmm, have you checked out the Orbeon Forms?([visit link])

Yes, XForms sounds good. PicoForms offers a solution that would work, and Yahoo has done their new mobile back end using server-side tech. An on-device XForms processor would help write portable mobile apps.

If I want to write an enterprise application for my business and I want my PC user's to be able to use it as well as mobile user's, java will not work. Web start will work on the PC but not a PDA, since I would have to use a midilet. Same with flash. I would have to develop in flash lite for the PDA's. I would have to write different version of the same program for different devices. The same with GWT for the PC based version. I would have to write a seperate application for Android and the Davlik jvm. This is where JSF is most suitable, with the concept of plugable rendering kits. Why can't I just use GWT on the gphone? Maybe I can. Maybe we should hybridize JSF. So what is the best platform for write one run anywhere? anyone?

> The number of different frameworks and libraries
> is too vast to even consider evaluating a fraction of
> them

So just use Flex instead, hehe!

@Michael: Nowhere am I comparing JSF and Flex, I'm merely discussing various technologies and delivery platforms for RIA applications. Nowhere am I saying that one is better than the other. I'm not sure why you would want to hand-code JavaScript, unless you are building a framework, doing a school project or some research. Do you consider GWT (Google Web Toolkit) to be a good Ajax framework? They do exactly the same, they hide the JavaScript from you.

sorry, but comparing JSF and Flex is ridiculous. JSF has nothing to do with RIA. You might say that JSF is a possibility to build Ajax apps, but then: why JSF? It is utterly unsuited for Ajax compared to other web frameworks BECAUSE it hides the JS from the dev.

Good article. It misses one important comment though. Your JSF example has to make a server call to the pojo to increment the click counter, while both Flex and JavaFX example do not need to do this because of their stateful nature, which is very important.

Out of these three, Flash Player's UI looks better than others.

What about XHTML and XForms Offline?