What is Marionette.js ?

Marionette.js is a composite application library for the Backbone.js. It simplifies the construction of the large-scale JavaScript applications. It is nothing but a collection of the common design and implementation patterns found in applications. Marionette brings the architecture of an application to the Backbone. It also has built-in view management and memory management. The Marionette is a lightweight and flexible library tool. It sits on top of the backbone and provides the framework for building a scalable application.