Syncthing Vs rsync Vs unison?

[imsodin (Simon)]

@syzygies

I believe that syncthing gets this right, but it is poorly documented. It also experiences a cacophony of conflicting, uneducated user requests, and old Windows behavior compounds matters further. So one can’t tell without spending hours studying the support requests, or making an actual experiment (I didn’t).

How is this unclear with regards to whether and how symlinks are synced? FAQ — Syncthing documentation

@syzygies

The ability to declare atomic directories is not a feature of any other two-way sync software, and it should be. I see no evidence that this is supported in syncthing, though behavior in this direction could be undocumented. A good heuristic: If a naive user can’t easily open a folder to reveal its contents (say, a Mac application bundle, or a sparse disk image) then the supporting directory should be treated as atomic by default.

There’s indeed no such thing as atomic directories in Syncthing. I totally see the value of it in general, but it would be a lot of work for a narrow use case.