RDP Tool for Sysadmins on MAC OSX - similar to existing app - you choose language

We need a program built for sysadmins to use OSX and have a productivity tool like we have on Windows. See screenshots of similar tool on Windows: <[login to view URL]> Here is a link to the tool - <[login to view URL]> (this version specifically is nice) I know multiple RDP sessions can be open on Mac - but want this interface. Just need to be sure it's stable - and similar, and we are happy. The main goal: Have a single program that can manage saved settings for many RDP connections. Have the same program allow multiple connections at one time, with a simple way to flip between them. It should allow saving server info, passwords, etc - in an encrypted 'settings' file on your machine - and be able to quickly open and connect to many servers at one time.