Free and Open Source Software

I'm currently using TimeShift to backup my desktop onto an external hard drive (the why is because of how simple it is to use) and I'll be making a copy of anything I upload to my jellyfin server onto the external hard drive as well. I hope to eventually have a dedicated backup server and have a duplicate of it at a friend's house for offside backup too

ZFS snapshots and Borg(matic).

I'm currently working on a disaster recovery plan using fsarchiver. I have very limited experience with it so far, but it had the features and social proof I was looking for.

I have so far used it to create offline filesystem backups of two volumes, one was LUKS encrypted (has to be manually "opened" with cryptsetup).

It can backup live filesystems which was important to me.

It's early days for my experience with this, but I'm sure others have used it and might chime in.

I've used Borg for years now. It's been rock solid. I test my backups regularly and have done several actual recoveries. I trust it with my data, which is the best thing I can say about backup software.