About WhatsOpen
Allows you to list all the open files on your system. Further you can sort them, filter by volume or user, kill the application associated with the files, look up man pages or even Google the application. It is a perfect tool if you ever get stuck with a “volume in use” error when trying to eject a disk or thumbdrive that you believe is not in use.

What’s New in this Version
- CPU Usage is displayed with each file to aid in resource tracking.