Backlift: The easiest way to build webapps (backlift.com)
FROM YOUR DROPBOX TO THE CLOUD
Backlift provides a database, user authentication and plug-ins for external services.
You don't need to be a rails, django or node.js developer to use Backlift.
Backlift works with popular front end technologies,
like Backbone.js, CoffeeScript and Handlebars, to name a few