Redux is an incremental backup application, meaning it copies only
those files over that have changed since the last backup. It also
offers restore capabilities, allowing the user to restore an entire
disk, a folder or just a file. If you still use your old Macintosh for
productive work that you care about, this might be a good app for your
backup needs.

DL #1 is v. 1.01 (68k), released 1988
DL #2 is v. 1.5 (68k), released 1989
DL #3 is v. 1.62 (68k), released 1990
DL #4 is v. 1.63 (68k), released 1990
DL #5 is v. 2.0.1 (68k), released 1993. This release was named Redux
Deluxe but seems to be part of this series.
DL #6 is v. 2.6.2 (68k & PPC), released 2000

Compatibility
Architecture: 68k

1 MB of RAM