There's Oracle Solaris ZFS. Since Solaris has been killed off, this original variant of ZFS is finished unless relicensed. OpenZFS is a fork, and is the upstre

There's Oracle Solaris ZFS. Since Solaris has been killed off, this original variant of ZFS is finished unless relicensed. OpenZFS is a fork, and is the upstream for Illumos, FreeBSD, Linux and macOS and all share the same on-disk format. The exact heirarchy, I think it's Illumos and FreeBSD as essentially co-equal upstreams, then ZoL (ZFS on Linux), and macOS is downstream of ZoL. I wouldn't call them different implementations. zfs-fuse I think is based on the original. https://github.com/gordan-bobic/zfs-fuse https://github.com/gordan-bobic/zfs-fuse