As a reminder, Debian has replaced its good old sysVinit with Red Hat’s systemd, starting with the release of Debian Jessie. Ubuntu has also adopted the change, Mark’s system being a Debian-derivative, but this under the hood change made a lot of community members unhappy.
Recently, the first UbuntuBSD unofficial flavor has been released, being codenamed “Escape From SystemD” and using the FreeBSD kernel, similar to the Debian GNU/kFreeBSD project.
UbuntuBSD is currently a beta release only, uses Ubuntu 15.10 Wily Werewolf as codebase, runs with FreeBSD 10.1 Kernel and uses XFCE as the default desktop environment and ZFS as default file system.
This distro is available via sourceforge.