zpaqfranz
Zpaq compatible archiver for Win, Linux, Free/OpenBSD, Solaris, MacOS
Advanced archiver (zpaq fork) with deduplication and versioning.
Never prune your backups: keeps a forever-to-ever copy (even thousands of versions) of your files, conceptually similar to Mac time machines, or zfs' snapshots, but much more efficiently.
Ideal for virtual machine backup and "freezing" zfs snapshots forever.
Easily handles millions of files and TBs of data.
Allows rsync backups to the cloud (or NAS, or USB) with minimal data transfer, encryption and very limited bandwidth.
Highest possibilities of data verification, fast, deep and even paranoid-level, with support for multithread acceleration on SSD/NVMe (real world 1GB/s+).
Freeware Win GUI (PAKKA) here https://www.francocorbelli.it/pakka/build/latest
No complex repository folders, just one file.
Latest "hashers" (SHA-3, BLAKE3 w/HW acceleration on Win, XXH3)
15+ years of developing (2009-now).
Seeing is believing! https://github.com/fcorbelli/zpaqfranz/wiki