I spent several months attempting to hack our applications to work within the ExtJS way, but found it pretty hostile to working with a traditional web application (e.g. POST/GET rather than AJAX everything). This bad experience led me to dismiss Cappuccino as being inappropriate for our needs, though it might be useful for writing apps from scratch. jQuery has proven far more amenable to a baby-steps conversion from a traditional CGI app to an AJAX application. There's also the accessibility and downgrade path question with all-JavaScript generated pages (like ExtJS, and, I thought, Cappuccino).

But perhaps I'm mistaken about Cappuccino.

i think in cappuccino you do everything in the "backend". there's no need to write javascript/html/css ... which is good in a lot of ways (you can output source for different devices, and i'm even guessing you could generate different backends - php, .NET) - but i'm more interested in the js/AJAX everything model, lighter on the backend.

i've never worked in objectiveC/J but js seems nicer at first glance. but i may just be saying that so that i don't feel like i would miss something should we choose etxjs.

more feedback would be appreciated guys.

jquery has gone so far that it is starting to smell like a DSL. all in js.

thanks for the feedback.