Developers of FreeBSD are making strides in Wayland support for FreeBSD. Wayland is a display server protocol that specifies communication between display servers and clients. Check out the discussion at Phoronix in the link provided.
BSD -- FreeBSD is making some progress on supporting Wayland/Weston as an alternative to running the X.Org Server.

Wayland support on BSDs and other non-Linux platforms has lagged behind, but Johannes Lundberg is one of the FreeBSD contributors working on getting things into shape. Besides Wayland/Weston support itself, it’s also a matter of the DRM drivers being ported from the Linux kernel being in less than ideal shape generally compared to the upstream kernel code.

Original article: https://www.phoronix.com/scan.php?page=news_item&px=FreeBSD-Wayland-December-16

Discussion: https://www.phoronix.com/forums/forum/phoronix/latest-phoronix-articles/920119-freebsd-making-progress-on-wayland-support-the-basics-are-working#post920119