RDCMan manager (Remote Desktop Connection Manager) could manage multiple remote desktop connection. It is useful when if you are the server administrator that manage multiple server or labs. It is not a new technology but it is use to group your remote desktop connection to one application and allow you to manage them with some advance setting.
You may download it at here .
Then open the application and add the remote desktop connection.
You may get the thumbnail view as below as well.
Double click on the title and you may enlarge the screen.