rsync hfsmode is a patch for rsync to enable recognition of Mac OS X HFS resource forks and Finder metadata, and to copy them to a remote filesystem. The destination system can be any OS and filesystem that supports rsync, so you can use rsync to archive Mac OS X files to servers running Linux, Solaris, et cetera.
Kerberos for Macintosh is an implementation of the Kerberos authentication system for Mac OS X. It is based on the MIT Kerberos implementation and provides Kerberos v5 and Kerberos v4 protocols, GSSAPI, a graphical authentication interface and accompanyin
DiskWarrior is the most highly decorated Mac disk repair utility ever. It repairs disks that no other program can repair. New hardware monitoring helps protect your data from drive malfunctions.