Clone Master will clean your hard drive of duplicate files that are just wasting space. It differs from other utilities of this sort in that it identifies duplicates based on name, byte size, data, and so on.
Clone Master makes it easy to identify duplicate files--and easy to determine which files you should delete. A feature allowing you to deselect all files was added to the previous version.
Version 2.19.1 adds the abilities to search for 'true' duplicate files (byte for byte), same-name files, and zero-length files.