Bespin was created to unify the Drupal update experience.
Agencies (and even freelancers) that work with Drupal on client sites need a way to keep sites up to date. This is especially true if the agency/freelancer is charging retainer fees to keep their Drupal sites up-to-date. What you need is a dashboard of all your clients' sites and their update status.
I am working on a project that get the data from 2 databases and shows the diferences between data and structure. It is important when there is a deploy-stage-dev workflow and some more dev2. Devs have changes that should be merged to stage, and the differences from stage made by one dev must be sync with another dev. moreover the new content from life also must be merge to stage and then to dev.
About this time last year my company launched the site I built using Drupal. There was quite a bit of time invested in learning how to use Drupal but there was a module for everything I needed to incorporate and a solution for every problem. Thank you Drupal module developers, without you this site would not have been possible. Here is the site: www.tylerguitars.com