rsync, Time Machine, Acronis Cyber Protect Home Office, FreeFileSync, EaseUS Partition Master, Duplicati, SyncToy, GoodSync, Carbon Copy Cloner, Déjà Dup, Dropsync, DirSync Pro, SmartSync Pro, SyncMate, Synchredible, Alternate File Move, Bonkey, SyncTime, Folder Snapshot Utility, DotSpirit Backup, AllSync by Michael Thummerer Software Design, Backaroo are some alternatives to ChronoSync.