What is "mactheripper"

MacTheRipper is a Mac OS X application that enables users to create a playable copy of the contents of a Video DVD by defeating the Content Scramble System. During this process it may optionally modify or disable the DVD region code or the User operation prohibition features of the copied data. The previous lack of an OS X equivalent to the PC software DVDShrink gave this standalone DVD ripper widespread popularity among Macintosh users.

The name is a portmanteau upon Jack the Ripper & Mac the Knife.

The current public release is version 2.6.6. The latest version, v4.2.7, is available at the MTR-4 forum, which is accessible only after a registration with, and an approval from, an administrator. Even documentation such as pricing (it's no longer free) and the FAQ are locked off.