Dtto

Start archiving efficiently. Drag and drop folders to quickly get folder paths ready for archiving. Download a log after your sync is complete to see what files were moved over. Files that are done copying are never deleted and will be skipped over if they have no new changes, saving you time over manual archiving. How it works - 
Dtto communicates with the rsync that’s already included in your mac and without having to learn the command line. - A non-destructive command is prepared for rsync to run that will efficiently check the differences between the folders you selected. Privacy - Dtto does not save or know anything about your data. - All sync archiving happens on your local computer. Please check out the FAQ for a demonstration and more info on Dtto.