BorgBackup

BorgBackup (Borg for short) provides:
Space-efficient storage of backups.
Secure, authenticated encryption.
Compression: lz4, zstd, zlib, lzma, or none.
Mountable backups with FUSE.
Easy installation on multiple platforms: Linux, macOS, BSD, ...
Free software (BSD license).
Backed by a large and active open-source community.
It is available for
Linux
FreeBSD
MacOS
https://www.borgbackup.org/
Configure HDD-Housing S3 Storage in BorgBackup