DrupalStatus

The Drupal Status module creates a bridge between Bespin.cc and your websites. With this module enabled, a key will be generated that Bespin.cc uses to authenticate retrieving a JSON object of your site's installed modules and their versions.

From there, Bespin.cc will notify you of any available updates to your site (including Drupal core and contributed modules) and any security releases.

Bespin.cc aims to help you keep your sites up-to-date with a dashboard to see all your sites at a glance.