nostr:npub1c4sgd346sl9uh7mjhn99xjsu7t8dwm54kl6hxp3k0qyl4kz6v94qh5aqv4 déjà dup is a nice graphical application that supports WebDAV storage back end for backups. Really nice and convenient for personal computers.

https://wiki.gnome.org/Apps/DejaDup