Indeed; I know and use it. But it's per file, and not very configurable.
It's not very helpful is you e.g. have a 1 GB file that gets appended 100 kB every day; Syncthing would store a new full-size copy in each version (immediately usable), while Borg / Restic / Kopia would only store the deltas (and would require slow mounting to access a particular version).
It's not very helpful is you e.g. have a 1 GB file that gets appended 100 kB every day; Syncthing would store a new full-size copy in each version (immediately usable), while Borg / Restic / Kopia would only store the deltas (and would require slow mounting to access a particular version).
Different tools for different jobs.