"Remastersys is a simple and easy to use application that allows
you to easily clone and backup your Ubuntu system so that you can
quickly restore your computer to its previous state in the event
that it crashes.
"There are two thing that Remastersys can do:
"To do a full system backup, including all installed
applications, their settings and your personal data, to a live CD
or DVD. You can use this live CD or DVD to restore your system or
to install it in another computer. You can also bring it around and
use it everywhere as a Live CD.
"To create a custom distributable copy of your current Ubuntu
system and share it with your friends."