title: What is the difference between Mustache.js, Handlebars.js and Underscore.js?
body: <p>I would like to choose a <strong>template engine</strong> for the <code>Backbone.js</code> framework I'll use inside my MVC application.</p>
  
  <p>I've read Backbone.js is compatible with <code>Mustache.js</code>, <code>Handlebars.js</code> and <code>Underscore.js</code> by default, does exist some important difference between these template engines or they do almost the same thing?</p>
  
  <p>Also, does exists <strong>other template engines</strong> compatible with <code>Backbone.js</code> should be seriously considered?</p>