Backbone.js
Backbone.js

BACKBONE.JS DEVELOPMENT

Backbone is fast and lightweight, though it takes a longer development time and greater understanding of its inner workings.

Compared to other Js, it has very low dev time as most of the functionality and ‘magic’ has already been implemented for you.

deserves a lot of credit in bringing MV* to mainstream client-side JavaScript development.
it gives you space for making your own development and architecture decisions.
is simple and flexible and requires only a few minutes to get started, even when using higher level additional libraries like MarionetteJS or Chaplin
tons of plug-ins and extensions
its simple yet powerful inheritance model, based on the useful extend method.