Comment I am not impressed (Score 1) 70
As a Java developer I am always on the look out for a client side GUI framework that is lighter weight than Swing. It is even better if it doesn't require a plugin or explicit download.
So, I went to the Echopoint demo site, and I was not impressed. I have seen faster Swing downloads - and I have certainly seen much better JavaScript interfaces. I don't know if the Echopoint site is just slow for some reason (I think it is), but even if that is the case the interface was very clunky. For instance, the Tree View widgets update by refreshing the page, as do the rest of the widgets I tried (a limited set).
Compare the "expanding" widgets to something I threw together: http://mywebpages.comcast.net/developer.dude/urls. html
Developers should look at UI frameworks from the user's perspective; users want a smooth fast UI that works on the browser they are using, without having to download a plugin.
I haven't looked at the Echo framework from the developer's POV because I can see within just a few minutes of trying out the demo that the user isn't going to like it.
Maybe I am just being lazy, or maybe the Echopoint demos are just poor ones.