This is the software publisher's description. 

With the growing capacity of hard disks and the availability of external drives using USB connections at affordable prices, the synchronization of data has became a real necessity.

Backup2007 Synchronizer can be used to synchronize data between two computers. If you work on 2 computers (e.g. a desktop and a notebook computer) use the Source>>Target<or Clone synchronization mode.

Backup2007 Synchronizer can also be used as backup software. You can back up data to a network drive or an external drive. If you use a device or a medium that is easily removable, it may be beneficial to encrypt files when these are important to your business or if you wish to preserve your privacy. The Live synchronization module is able to copy a file as soon as you have made any change or renamed it. It is a very useful tool if you own a USB memory key.