Mirall is a gui to sync your folders with csync.

mirall ist location aware and should not try to sync against your nas if you are not in the home network. it should work silently and realiably.

specify one ore more directories on the local machine to sync, and always have your latest files wherever you are. make a change to the files on one computer, it will flow across the others using these desktop sync clients.

these are the localization files.