Search MacUpdate for "synchronize" <http://macupdate.com/search.php?keywords=synchronize&order=license> Free examples: LexSynch http://macupdate.com/info.php/id/13878> Synchronize Folders <http://macupdate.com/info.php/id/17072> I never worked with the above two and I don't know if you can compare before you actually copy anything. I use Synk ($20) for that <http://macupdate.com/info.php/id/1802> Björn