The Google Dashboard is a handy tool for keeping up with what information Google has stored for you in its various different products. One piece of the handy information, though, has taken a while to become available but it's there now: your Android devices. It's unclear if this feature has been around for a while, but either way, it's useful. If you'd like to see which devices are registered with Google, and more interestingly, which apps on those devices have backups stored on Google's servers, you can do so from your dashboard.
Unfortunately, as with a lot of information on the Dashboard, you can see this info, but you can't do much with it from here.