catacombae

It seems to me there are dozens of ways it would be helpful if a portable app could make Macintosh HFS and HFS+ formatted disks readable on Windows.

Inasmuch as this one is open source, I assume it would be possible?
http://hem.bredband.net/catacombae/hfsx.html

In particular, it would be handy of some sort of disk cataloging software like Cathy were able to catalog the contents of Mac formatted diskettes and CDs.
http://www.mtg.sk/rva/

Is this sort of thing even possible?