MACAddy

[Info-Mac]

Download: http://archive.info-mac.org/comm/macaddy.hqx

MACAddy (tm) is a two-part system that is based on a client and server
application.

What is it for?

I made this application so that I could monitor my network traffic and
could make sure that the users didn't change their ip address as I could
use their MAC address and cross-reference the addresses. I find it
useful, you may not, it was just a way for me to gather info without
having to go to 200 machines and get it myself when I could have the
user run it for me and save us both a lot of time.