ServiceDesk Plus does a neat classification of the different types of your assets (both hardware & software inventory) & presents the inventory in a tabular as well as graphical form. It offers a wide range of Inventory reports, some of which are listed below.

General
Assets by Product Types
Assets by Product
Assets by Acquisition Date
Assets by Expiry Date
Assets by Requester
Unassigned Assets by Product Type
Unassigned Assets by Product
Assets not in Contract (by ProductType)
Assets not in Contract (by Product)
Assets from Vendor (by ProductType)
Assets from Vendor (by Product)

Workstations
Workstations by OS
Workstations by Manufacturer
Workstations by Domain
Workstations by Network
Unassigned workstations by Domain
Unassigned workstations by Network
OS count by Domain
OS count by Network
Model count by Domain
Model count by Network
Manufacturer count by Domain
Manufacturer count by Network