Most VI SDK developers know Managed Object Browser (MOB), and mostly have used it for better understanding of the SDK, or assisting programming and debugging. In my opinion, it’s a must-have tool for every vSphere SDK developer.
It’s extremely helpful if you want to figure out the inventory path of certain managed entities. The vSphere Client shows you different paths which don’t work with the SearchIndex and others. Nothing wrong with vSphere Client – it just tries to display information in a way that is easier to understand by the system administrators.