Free and Open Source Software

I use FreeFileSync. It's the only GUI tool I found that let's me sync folders while omitting file deletions. It lets you create batch files from the GUI that I execute with crontab multiple times per day.

I use NixOS so all my system configuration is already saved in my NixOS configs, which I save on GitHub. For dotfiles that aren't managed by NixOS I use syncthing to sync them between my devices, but no real backup cause I can just remake them if I need to, and things like my Neovim and VSCode configs are managed by my NixOS configs so they're backed up as well.

I work with VMs mostly, so I go for Veeam B&R. The free tier allows you to backup 10 VMs or machines.

ZFS snapshots and Borg(matic).

Multiple. Locally I have Timeshift doing btrfs snapshots every so often. This is mostly to roll back to a snapshot if something breaks. I've never had to use it (and probably should).

I use Pika backup every once in a while for a local backup to an external drive. Mostly because it's easy to restore quickly.

I have duplicacy doing backups to a cloud provider. I used to use duplicati for this, and it was fine - although I didn't like that it seems to be forever in beta. I like that duplicacy can do deduplication between backups of different machines which most other solutions I've seen cannot. I like its selection of cloud providers vs Borg/Vorta and some others.

I started using Timeshift when it was included with a distro I was using and haven't had reason to shift away from it. Have already used it once to do a full restore.

I like pikabackup it’s based on borg

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

I only have backups of my important files, encrypted and synced through rclone.

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.