My recommendation would be Duplicacy [0]. Code is also on GitHub [1]. It has a paid GUI version, $20 for the first year and $5 for subsequent years with discou

My recommendation would be Duplicacy [0]. Code is also on GitHub [1]. It has a paid GUI version, $20 for the first year and $5 for subsequent years with discounts for multiple machines [2]. At least once they've run a promotion for a very cheap lifetime license. Use it just from the CLI is free. My setup is pretty simple, Syncthing and Duplicacy (GUI version) run in a docker container on my home server. Everything gets sync'd to the server and then Duplicacy backs it up hourly to a Hetzner Storage Box and BackBlaze B2. The deduplication is a huge data saver on the cloud storage especially for pictures or videos that may be on multiple computers and different syncthing folders. [0] https://duplicacy.com/ https://duplicacy.com/ [1] https://github.com/gilbertchen/duplicacy https://github.com/gilbertchen/duplicacy [2] https://duplicacy.com/buy.html https://duplicacy.com/buy.html