nFreezer is different to RClone and Duplicity on a very important point (for me because I often move big multimedia projects): if you move `/path/to/10GB_file` to `/anotherpath/subdir/10GB_file_renamed`, no data will be re-transferred over the network, thus saving 10 GB of data transfer.

Indeed, Rclone does not handle renames when in encrypted mode, see https://forum.rclone.org/t/can-not-use-track-renames-when-sy...

Idem for duplicity (tests done).

TL;DR: see 3rd point of https://github.com/josephernest/nfreezer#features

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Another interesting feature is that you can read/audit the full source code of nFreezer quickly: it's only 249 source lines of code, as of today.