"On a LAN, I don't really see the advantages over something like FreeFileSync, which is GPL'd." AeroFS is not a 'copy diffs' tool, it's like dropbox - changes

"On a LAN, I don't really see the advantages over something like FreeFileSync, which is GPL'd." AeroFS is not a 'copy diffs' tool, it's like dropbox - changes are propagated instantly and automatically, in all directions. Yes you can run a cron job syncing every 2 minutes or whatever but that still doesn't do syncs to many machines, it means you need to keep the machine with the cron job always on etc. So no, AeroFS/Dropbox are not like FreeFileSync or Cobian Backup or rsync or SyncToy or anything like that.