Backform takes a Backbone model and transforms it into an HTML form. Any changes to the form are relfected back to the model and vice versa. It comes with built-in controls for input, select, radio buttons, checkbox, etc. Backform controls are Backbone views and extensible. Backform even supports nested objects. Backform is built with Bootstrap 3 markup. Supports Bootstrap 2.3. Adaptable to any markup framework.
Documentation and examples available here: http://amiliaapp.github.io/backform/