shadowIP 2.1 (Mac)
Source: stupidFish programming
shadowIP is a shareware IP monitoring utility for Mac OS X. shadowIP was written in cocoa and is 100% OS X native. shadowIP lets you view all IP addresses of your Mac on your desktop or in a floating window. No cluttered desktop! shadowIP even lets you configure which IP addresses to show and which not, and it lets you customize the color of the text it uses. shadowIP offers the ability to run in Faceless Mode, meaning it won't show up in the dock. shadowIP also offers to show the computer's name, as set in the Sharing Preferences.