I embarked on this because, for a while now, I have encountered different installations of SP. And this has created a load of different trouble scenarios. Then I thought, whats if you had a "magic wand" you could wave at that server.. Then it would tell you whats wrong and where..
I came across Eamon Barker's blog here. Its a good compilation, but my search continues.
Besides the Microsoft SharePoint Administration Toolkit which you can find here . It can only add the Batch Site Manager.
Which is added under the Apps Mgmt can only be used for Site Collection. I will rate this tool 30%.