MAC Info 2
You can download MAC Info 2 2.0 from our application library for free. This free software for Mac OS X is a product of Marco Weitz. The program lies within Internet & Network Tools, more precisely General.
From the developer:
Typing the MAC-address of your ethernet card shows you its vendor. Useful for war-driving :-)
You may want to check out more Mac applications, such as MP3-Info, Any File Info or File-Info, which might be related to MAC Info 2.