- Restic (https://restic.net/)
- Borg backup (https://www.borgbackup.org/)
- Duplicati (https://www.duplicati.com/)
- Kopia (https://kopia.io/)
- Duplicay (https://duplicacy.com/)
- Duplicity (https://duplicity.us/)
Faster than any other backup software (because it knows what's changed from the last snapshot being the filesystem itself but external backup tools always have to scan the entire directories to know what's changed), battle tested reliability with added benefit like transparent compression.
A bit of explanation on how fast it can be than external tools. (I don't work for the said service in the article or promote it.)
https://arstechnica.com/information-technology/2015/12/rsync...
Then you'll realize Borg is the one with least data corruption complaint on the internet which is good as your secondary backup.
Easily checked with, "[app name] data corruption" on Google.
And see who else lists vulnerability and corruption bugs upfront like Borg does and know the developers are forthcoming about these important issues.
https://borgbackup.readthedocs.io/en/stable/changes.html
The term "best" apparently means reliable for backup and also they don't start choking on large data sets taking huge amount of memories and roundtrip times.
They don't work against your favorite S3 compatible targets but there are services that can be targeted for those tools or just roll your own dedicated backup $5 Linux instance to avoid crying in the future.
With those 2, I don't care what other tools exist anymore.
It might be worth adding an asterisk there.
https://borgbackup.readthedocs.io/en/stable/faq.html#can-i-b...
Do you have any odd requirements that one might serve better than the rest? If you just want bog-standard backups, any of them will probably do.
I've tried all of these, and none are as reliable or powerful as Bacula.
It's way more complex at first, but you will have peace of mind. And backup/restore speed is way faster.
You can even easily setup automatic restore jobs to prove your backups work!