FoldersSynchronizer is a simple and convenient program for synchronizing files in folders. It is good for synchronizing file data between a hard drive and removable media, between drives and published folders on a local network, or simply for mirroring data on different hard drives in case one of them fails. In the program you prescribe a set of pairs "source-receiver" and then synchronization is done with the click of a button.
For two-way synchronization you need to enter another pair in which "receiver" and "source" are rearranged. Among the useful features of this program it should be mentioned that the program stores the version number of each known to it (at least once synchronized) file, hash value of the file and based on this data quickly determines what files have been changed and should be copied.