MACFinder

MACFinder is a quick and easy-to-use application designed to help you identify the MAC addresses and host names of the computers in your local network.
It's capable of scanning all machines in range by entering a local IP address. The tool was developed to aid network administrators in detecting any rogue devices which may have been plugged into their network without authorization.

Pay attention to the installer

Installing this software product doesn't take long. However, because it's ad-supported, MACFinder wishes to set up additional tools that aren't required for it to work, as well as to make some changes to your web browser settings. Unless you're interested in this, make sure to clear the box with the offer before clicking Next in the wizard, in order to perform a clean installation.

.NET Framework-based tool with a simple GUI

Another aspect worth noting about requirements is that .NET Framework must be installed on your computer to be able to launch this app, since it was developed using Microsoft's software framework.
As far as the interface of the application is concerned, the main window has a simple and neatly organized structure, showing all options in plain sight, so you don't have to open any menus to discover settings.

Set a local IP address to scan all PCs in LAN

By default, a public IP address is listed in the IP Address Range box. However, make sure to replace it with a local IP address, otherwise the app won't work. In our tests, the range wasn't taken into account for the scanning operation. Regardless of the range of addresses we specified, the tool automatically verified everything.
The results list reveals the MAC address of each valid IP address, along with the computer name, if available. You can scroll the list to view all results. However, there are no options implemented for copying this information to the Clipboard or saving it to file.

Basic tool for finding the MAC address and host name of local computers

All things considered, MACFinder is a rather basic software utility for identifying the MAC addresses and host names of the computers in your LAN, and its search system is flawed. Nevertheless, it displayed accurate results in our tests.