sanoid (https://github.com/jimsalterjrs/sanoid/ https://github.com/jimsalterjrs/sanoid/) is probably the most featureful, but there's quite a few I'm aware of -

sanoid (https://github.com/jimsalterjrs/sanoid/ https://github.com/jimsalterjrs/sanoid/) is probably the most featureful, but there's quite a few I'm aware of - zfsnap, zfs-auto-snapshot, zfs_autobackup, znapzend...