As someone who developed web apps since the DHTML days when DOM was not yet standardized,... :) I'd add another major category and that's ExtJS and friends (la

As someone who developed web apps since the DHTML days when DOM was not yet standardized,... :) I'd add another major category and that's ExtJS and friends (large integrated MVC GUI component frameworks), which successfully replicated the [developer] feel of desktop GUI toolkits in the browser, somewhere between your last two categories.