Knockback.js provides Knockout.js magic for Backbone.js Models and Collections

Backbone-ModelRef.js provides a mechanism to respond to lazy-loaded Backbone.js models.

Knockback-Inspector.js provides an inspector tree view library for Backbone.Models and Backbone.Collections using Knockback.js

KnockbackNavigators.js provides page navigators, a pane navigator, and transition animations to help you make dynamic, single-page applications. They are platform-agnostic so you can even use them without using Knockback.js or Knockout.js!