DirSync Directory Synchronizer is a powerful and flexible folder/file synchronization, replication and backup product. The synchronization is an effective and efficient way to backup files for it will only copy those files which are different between source and target folders. The sync is based on the user specified policy that simplify the setting of sync rules. DirSync support many powerful features and flexible options to be suitable for various situations.

more info @http://www.archersoft.com/
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