Are you looking for a fast, effective, and descriptive IP Scanner? Do you need to scan IP addresses for information?
I recently stumbled across a tool, called "Advanced IP Scanner" (Great name right?) that did everything I needed when I was looking for information on one of my networks. In less than 5 minutes, I had downloaded, installed and run it across my whole network (more than 300 IP Addresses). It also gave me the following information (As you will see it on the screenshot):
Status :: Name :: IP Address :: Manufacturer :: MAC Address :: User
This is just my smaller network, and what it found.
With the information I collected, I was able to pinpoint the addresses of firewalls, switches, backup batteries, wifi devices, and even printers(by model). This made finding things very easy, and when something changes its own IP address, very easy to find again.