You can now purchase two of my favorite backup software Titles on eBay: Synchredible and Backup Maker. While the software is free the license removes the ads in the software.
This software comes to us from Deutschland. https://www.ascomp.de/en/start
The Synchredible Synchronization Software can sync files from multiple computers with many options.
Synchredible works great to sync OneDrive folders.
BackupMaker is a great Product as well, making full and incremental BACKUPS.