KebaSoft!
(Really outdated, once ahead of their time) shareware for Mac OS


AutoCat
Shareware for Mac OS X

Simple and elegant disk cataloging system.
AutoCat

Out!  Out!   Shareware for Mac OS 9

(Yes, that's old...)
Closes your windows when you drag them outside the screen.

 

Some AutoCat customers...

Belkin

Pioneer Press Newspapers

KraftWorks, a design company

The Wall Street Journal

SAFECO