Tarylynn synchronises two folders and all subfolders within. You can take a quick backup to a network drive, or copying files to a laptop. Tarylynn does not depend on a database like briefcase does, backups are more portable, and there is no single point of failure. If files exist on both sides, the file modified dates are compared and the newer one is copied across. When deleting, files existing on both sides are ignored regardless of modified dates. Tarylynn can even be scripted for automatic running. It is useful for periodic backups, or for copying default user settings for software installation. Tarylynn also comes with a simple FTP mode. Great for updating WebPages or accessing work servers when at home.