Sidecar is SugarCRM's client-side MVC framework. It extends Backbone.js and forms the core of both the SugarCRM web application and Sugar's mobile offerings.
New to Sidecar?
Please check out the Sidecar section of the Sugar Developer Guide for a good overview of the Sidecar framework.
Once you get started with Sidecar programming, here are some of the key classes you will be using.