Are there any alternatives to something like backbone.js out there that provides some framework/structure to your front end javascript - but don\'t have any unwanted dependencie
I think there's only one MVC framework that is as fully featured and still even more puristic and that's Spine http://spinejs.com/. It's not so closely married to jQuery though since it's actually not dependent on any other library.
The fundamental difference between Backbone is that Spine wants to abstract the server away completely so that none of the asynchronous calls are being waited, but that the application just continues it's work while the calls are done in the background. (http://spinejs.com/docs/introduction)