Directory synchronization made easy. With DateiSync you can synchronize directories wih each other, with all the subdirectories on both sides in one phase. Not a single but all directories, if you wish.
Of course not only at one pc or with an external harddisk but also from pc to pc or notebook, when the computers are connected by routers or crossover cables.

The license of this software is Freeware, you can free download and free use this file sync software.