&gt; Web frameworks are no longer supported, in Javascript we have seen Backbone, Knockout, Angular, Ember and React in rapid succession, with older frameworks massively losing momentum and community.<p>Uh, all of these are supported quite well.  Each has a place in the ecosystem and will be around for a long time.  Anyone who considers rewriting an app because a new one of these comes out has a serious problem.  My old apps use older ones and my new use newer.  What is the problem?