If you’re wondering what
Popup.app is on your Mac, the little program that has a lighthouse as an icon, and you are questioning “How did this thing get on my computer?”, well, I have your answer.
Popup.app is the pharos print popup manager. If search your hard drive for Popup.app you should find it located:
The version I have says:
Popup.app, version 8.1 (5169) Copyright ©2004-2009, Pharos Systems