UFC is a highly useful data file compare program. Unlike other compare
    functions which can only check one file versus another, UFC can
    cross-check many data files (upto approx. 1000 files) against each other,
    checking for identical data. When files are found to be identical the
    results are recorded to a log file, with the option of deleting duplicate
    files either automatically or by the users discretion.

    Uses for UFC include checking for duplicate images, sound files,
    ROM images for video game emulators, etc.