"Can I run Debian GNU/kFreeBSD in a chroot under FreeBSD?" - link
A. Yes, you will need:
Open Source Textbooks - link
Fujitsu Announces Smartphone Dual-booting: Symbian, Windows 7 - link
Посмотрел количество портов: FreeBSD - 22462 , Debian - более 29000, Fedora - 125388 - link