a nice DVD collection manager software

Found an innovative DVD backup tool -- DVD Library -- at MacNN.com last week. It is a very useful application for movie buffs to organize and backup huge DVD collections on Mac.
It allows you to backup DVD to hard disc by creating ISO image without quality loss (Blue-ray DVD is not supported).
All DVD copyright protections are also preserved, I guess this backup won't be related to legal issues.
Enter the UPC code and the information of the DVD movie will be downloaded from the Amazon database, creating a cover image of a DVD disc at the same time.
Then, you can organize these DVD ISO images (digital DVD collection) easily on your Mac.
The point is you need a huge storage device -- I got a 4TB external hard disk.

P.S.This DVD library is now on promotion, only $19 (originally cost $29). Just go it's official websites. (iSkysoft.com)