DMG2ISO is an Apple's compressed dmg to standard iso convert tool.
This tool handles z-lib compressed dmg images.

Usage:
 dmg2iso <image.dmg> <image.iso>

vu1tur <to()vu1tur.eu.org>

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  947    2370  40.0% -lh5- c778 Feb  1  2006 dmg2iso/base64.cc
[generic]                  533     959  55.6% -lh5- 2f75 Sep 26  2005 dmg2iso/base64.h
[generic]                 7016   18011  39.0% -lh5- 85dd May  5  2005 dmg2iso/COPYING
[generic]               124741  273759  45.6% -lh5- 10df Jan 16 20:10 dmg2iso/dmg2iso
[generic]                 2564    8595  29.8% -lh5- a364 Feb  3  2006 dmg2iso/dmg2iso.cc
[generic]                  779    1521  51.2% -lh5- 700a Feb  1  2006 dmg2iso/dmg2iso.h
[generic]                  197     363  54.3% -lh5- 732c Jan 16 20:10 dmg2iso/Makefile
[generic]                  137     189  72.5% -lh5- 23f6 Sep 26  2005 dmg2iso/README
[generic]                  248     393  63.1% -lh5- 1ab3 Jan 16 21:27 dmg2iso/dmg2iso.readme
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         9 files  137162  306160  44.8%            Jan 16 16:28