DVD Shrink completely back up your comercial dvd's.

ShrinkTo5 Compress double-layered DVDs to burn them on single-layered DVD discs.

machinist.dll lets ShrinkTo5 copy comercial dvd's just put the file into the ShrinkTo5 directory

DVD Decrypter lets you rip dvd's to your hard drive

ratDVD compresses and rips dvd up to 1 gig without losing menus or quality

IsoBuster Recover lost files or data from your CDs and DVDs

Daemon Tools Emulate virtual image of your CD or DVD on hard drive.

AutoGK DVD to DivX/Xvid Converter