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Full user review
"Assures backups are accurate. Also finds duplicates"
Easy to compare two directories (inluding subdirectories). If there are differences, you can SYNC by copying in either direction, or two-way updating. Includes File comparisons, and Duplicate finder. I use it when doing backups and duplicating directdories for CD storage.
If you change one file, or copy from one directory to another, the program requires a scan of ALL subdirectories, even those left alone during the modification. It slows down things, but they'll probably work on that for a future release. It doesn't affect the usefulness, just some time waiting for comparing directories that have already been compared.