This is fdupes 2.0.0. If you're an end-user then you probably want the file named fdupes-2.0.0.tar.gz. The other archives are created automatically by GitHub and are intended for developers.

Changes from 1.6.1 to 2.0.0:

• Add ncurses mode for interactive file deletion (plain mode still available via --plain or ./configure).
• Add --minsize option.
• Add --maxsize option.
• Add --time option.
• Add --order=ctime option.
• Add --log option.
• Use configure script for installation (Autotools/Automake).