@h3artbl33d@exquisite.social @zak A little investigation shows that HexOS is a paid/commercial UI layer to make TrueNAS Scale—their Linux–based OS replacing the FreeBSD–based TureNAS Core—more "user-friendly".

(I'm following this thread as am about to migrate one of my Proxmox VE servers to TrueNAS, and am also interested in other options.)