jdupes
jdupes - A greatly improved fork of fdupes duplicate scanner. Ported to Windows and Mac OS X with binary releases available.
fdupes
FDUPES is a program for identifying or deleting duplicate files residing within specified directories.
dupd
dupd is a file duplicate detection CLI utility. The build currently supports Linux (tested on Debian), Solaris (tested on Open ...
Rdfind
Rdfind is a program that finds duplicate files. It is useful for compressing backup directories or just finding duplicate file ...