Backbone.js

Backbone.js is a JavaScript rich-client web app framework based on the model–view–controller design paradigm, intended to connect to an API over a RESTful JSON interface. Backbone has only hard dependency, which is on one JavaScript library, Underscore.js,. jQuery can also be optionally used for the library. It is designed for developing single-page web applications, and for keeping various parts of web applications (e.g. multiple clients and the server) synchronized. Backbone was created by Jeremy Ashkenas, who is also known for CoffeeScript and Underscore.js.

When handling the DOM Backbone.js adopts an imperative programming style, in contrast with a declarative programming style (common in AngularJS using data-attributes). Trying to provide "the minimal set of data-structuring (models and collections) and user interface (views and URLs)", leaves to the developer the choice of extensions for enhanced functionality. For example, one can use nested views with Backbone Layout Manager or model-view binding with ReSTbasis.

Use
The following web applications are built with Backbone.js:
 * 500px Web
 * Airbnb
 * Diaspora
 * Digg
 * DocumentCloud
 * Drupal 8
 * Foursquare
 * Grooveshark
 * Groupon Now
 * Hearsay Systems Advisor Cloud
 * Hulu
 * NewsBlur
 * Nextcloud
 * Openbravo Mobile (with Enyo).
 * Pandora Radio
 * ReSTbasis
 * SoundCloud
 * Trello
 * USA Today.com
 * WordPress.com
 * verizon.com
 * xTuple (with Enyo).