BSD

DragonFly includes many useful features that differentiate it from other BSD operating systems

FreeNAS 8 Storage for Open Source - NAS software featuring ZFS on FreeBSD.

GhostBSD is a Gnome desktop distribution in the form of a live CD and DVD

PC-BSD is a user friendly desktop Operating System based on FreeBSD.

FreeBSD is an advanced operating system for modern server, desktop, and embedded computer platforms.