[coffeekid]

Different use case. Syncthing just keeps folders "in sync" between two machines even if they are not on the same network. Great tool to always have a backup of pictures taken from your phone to a small raspberry pi running at home for instance.

[rehevkor5]

It also syncs modifications, so it's not really a backup solution.

[m000]

It can be, if you enable file versioning [1]. Or, of course, if your remote filesystem is configured for periodic snapshots.

[1] https://docs.syncthing.net/users/versioning.html