Review on ServerAssist by Jason Richardson

The best part is that it has an option of adding more servers in future as per requirement without any extra cost involved, so we don't have to purchase additional server's licenses which would be very costly if we do not add them at initial stage itself.

It can also be used for monitoring other applications like SQL DBMS etc., but I think this feature should be available by default with all products. We are using it to manage our multiple virtual machines running different OSs such as Windows 7/8/10 & Linux operating systems.