Macroscope

I find Macroscope pretty useful tool in providing complete picture of the documentation - Easy to use, many quick links to navigate both horizontally and vertically within the product, it is a pleasant experience. Based on PMP Methodolgy. At a very high level, Macroscope documents are created based on Owner's view, User's view and Developer's View. To know more about Macroscope Click here
I saw a pdf which provides more information on this,
Click here to read more about it.

It is interesting to note that Macroscope is considered as a as a Market leader by Gartner as shown in the picture below:

More on this latter.