Microsoft Office Interactive Developer Map

The Microsoft Office Interactive Developer Map is a WPF application that helps developers visualize the different programs, servers, services, and tools that will help them build solutions. It allows them to drill down to each product and technology and learn about new features, objects, Web services, namespaces, and schemas required to extend Microsoft Office and build custom Office Business Applications.
From MSDN

Install the Microsoft Office Interactive Developer Map Version 2
Install the Microsoft Office Interactive Map via ClickOnce.
Note: Firefox users will need to install the FFClickOnce extension first.

The following prerequisites are required:
.NET Framework 3.0
.NET Framework 2.0

Visit MSDN Page