PureSync is a powerful and free (for personal use) program that will help you sync data among a variety of sources and destinations. It’s one of the most useful and well-designed ::More

Zback is a free (for personal use) synchronization tool. It will let you synchronize directories for routine backup, for example between hard drive and USB drive or synchronize two computers via ::More

AutoVer is a free program that performs automatic or real time backups. It can be used as a simple real time backup or as a more complex, but transparent version control system (like a realtime ::More

If you need to update a folder taking files from different folders (and finally update them too), you can try Horodruin, a free program that will help you synchronize more than 2 folders with a few ::More

SyncBack is a free, easy to use and feature-full program you can have to back-up, restore, and synchronize files and directories, on a local drive, a network drive, an FTP server, a ZIP archive, or ::More