ProFUSE -- a FUSE filesystem for ProDOS disk images. Currently read only.
Macintosh
Macintosh users will need to install MacFUSE. An installer disk image (10.4+ x86 and ppc) is available to the right (or a zip file with the binary, if that's your preferences)
Linux
Linux users should follow the directions in the LinuxSupport page.
FreeBSD
FreeBSD users should follow the directions in the FreeBSDSupport page.