Synkron is a simple Qt application that allows you to sync folders, for example a flash disk with a folder on your hard disk.
Synchronise multiple folders
Tabs allow you to have more synchronisations running at once
Periodical synchronisations automatically sync your folders in selected intervals
Restore files, which were overwritten during the synchronisation
Add files and folders to black list to make sure they won't be synchronised in the future
Make schedules and backup using multisync
Synkron is Free Software

The license of this software is Free, you can free download and free use this data backup software.