As anther poster mentioned, search may not be an indication of popularity.

Personally, I've used Backbone, Angular and now Ractive, and I spent at least 10x the time Googling when using Angular.

Angular docs aren't that bad. No, they don't even exist.

Actually jQuery or is it not framework anymore?

It never was a framework; it was a better API for the DOM + some various other browser APIs -- so much better, in fact, you can get a near-framework-like productivity boost using it.

(At least at first, before it starts to matter that it's no help in terms of organizing a larger application. :)

jQuery is a library for things like DOM manipulation, AJAX, animation, and events.

Ember and Backbone depend on jQuery, for example.

Agreed, jQuery is more of a toolkit that complements frameworks