Many if not most backup tools have some way to mount a backup archive as a file system after which you can use whatever tools you like to peruse its contents. Here's some examples of tools I use or have used:
$ apropos borg-mount
borg2-mount (1) - Mount archive or an entire repository as a FUSE filesystem
$ restic -r /srv/restic-repo mount /mnt/restic
enter password for repository:
Now serving /srv/restic-repo at /mnt/restic
Use another terminal or tool to browse the contents of this folder.
When finished, quit with Ctrl-c here or umount the mountpoint.
$ proxmox-backup-client mount <snapshot> <archive-name> <target> [OPTIONS]
Currently mostly using borg2 for occasional manual backups to external drives and proxmox-backup-client/server for backups to a central archive. All have been 'battle tested' as in 'used to restore broken systems'.
Comments
Many if not most backup tools have some way to mount a backup archive as a file system after which you can use whatever tools you like to peruse its contents. Here's some examples of tools I use or have used:
Currently mostly using borg2 for occasional manual backups to external drives and proxmox-backup-client/server for backups to a central archive. All have been 'battle tested' as in 'used to restore broken systems'.