The Site Explorer allows system administrators to explore SharePoint's Web applications, site collections, and subsites, both live and previously loaded. Use the tree view in the left navigation bar to expand and collapse sections and to preview values in the main grid.
Reports are available in both live and historical view - use the date filter to switch between these modes.
Available reports per Web Application are:
Web Application Features
People Picker Settings
Web Config Files
Available reports per Site Collection are:
Site Collection Features
Content Types Hierarchy
Available reports per Subsite are:
Content Type Usage