FreeFileSync
FreeFileSync is a folder comparison and synchronization software that creates and manages backup copies of all your important files. Instead of copying every file every time, FreeFileSync determines the differences between a source and a target folder and transfers only the minimum amount of data needed. FreeFileSync is Open Source software, available for Windows, Linux and macOS. Donation version available with these extra features:
- Parallel file copy
- Auto-updater (Windows)
- Portable version (ZIP)
- Silent installation Donation amounts are calculated accordingly, e.g. a €20 donation corresponds to one year of updates, a €100 donation to 5 years of updates, etc. See: https://freefilesync.org/faq.php#donation-edition
