https://github.com/florind/what-runs-where

What-runs-where is a service that parses and aggregates the version strings of any number of web services which choose to publish their version. It is useful when you have several testing&prod environments where several versions of your web services are running and you want to have a quick overview of what runs where. Live example hosted on Heroku: http://vast-brook-8589.herokuapp.com/