Timeshift

Timeshift snapshots your system files (rsync mode on any filesystem, or near-instant snapshots on Btrfs) so a bad update or broken config is a five-minute rollback instead of a reinstall. Maintained by the Linux Mint team, it’s the standard recommendation for anyone who tinkers — and on Arch-based distros paired with Btrfs and grub-btrfs, you can even boot straight into a snapshot.

Know what it’s not: it deliberately excludes your home data by default, so it’s system insurance, not a backup solution — pair it with something like Pika Backup or Borg for personal files. Btrfs mode also requires a specific subvolume layout (@ and @home), so check your install before relying on it.