Get rid of those files you cannot delete by other means.
Unlock iPhone/iPad/iPod passcode and regain access to your locked iOS devices.
DVDInfo X 3 is a small utility that scans your Mac for DVD drives and displays their RPC (Region Playback Control) status.
File Matey allows the user to take control of his files and change attributes.
It deletes locked files from the trash without having to unlock them all first.