You are very right. EXTJS is the only RIA and desktop top js lib that has enough features to be a net gain for the UI dev. There is room for a desktop focused

You are very right. EXTJS is the only RIA and desktop top js lib that has enough features to be a net gain for the UI dev. There is room for a desktop focused lib in this space, that is not at the scale of EXT, or even an opensource project. http://www.kendoui.com/ http://www.kendoui.com/ Kendo is not ideal but does address a couple of your issues. It is opensource for delayed versions and commercial for current. But it has a poison tree license on the free version. I only bring it up because some of the structures allowed me to build a recent project with a mostly desktop feel, although the documentation is beyond horrible.