PPC ONLY -
ISOlator takes a volume or DMG (Disk Image) and turns it into an ISO. It can be used
to make a backup of CDs, DVDs, a USB memory stick or almost any other type of
mountable disk on OSX. CD and DVD isos can be burned back onto CD or DVD to
produce an identical copy of the original.
It can also convert DMGs into the ISO format so you can burn them on a non-Mac
Double clicking an ISO will cause it to be mounted so you can view the files. ISOs are
read-only, so any changes to files must be saved elsewhere.