Kernel_Layout_*.svg:
Source: http://commons.wikimedia.org/wiki/File:Kernel_Layout.svg (With own modifications)
License:
Creative Commons Attribution-Share Alike 3.0 Unported license, see
http://creativecommons.org/licenses/by-sa/3.0/deed.en


messe-2-b26.png:
Source: http://www.cebit.de/suche?srchopts=ZmDkZQH5Awx4BzIlqzqlMG0lWaMkCGRjZQtkZwZ2BwRlAwL1BQR4ZQVD
License:
Unknown


Heckert_GNU_white.svg:
Source: http://commons.wikimedia.org/wiki/File:Heckert_GNU_white.svg
License:
Free Art License, see http://artlibre.org/licence/lal/en


freebsd-logo.png:
Source: http://www.freebsd.org/logo.html (Standard Logo with the text cut off)
License:
license from The FreeBSD Foundation


Tux-shaded.svg:
Source: http://commons.wikimedia.org/wiki/File:Tux-shaded.svg
Licens: Permission to use and/or modify this image is granted provided you
acknowledge Lary Ewing (lewing@isc.tamu.edu) and The GIMP if someone asks.



open-logo-100.{png,svg}:
Source: http://www.debian.org/logos/
License:
Copyright (c) 1999 Software in the Public Interest
This logo or a modified version may be used by anyone to refer to the
Debian project, but does not indicate endorsement by the project. 


phoronix/*:
Source: http://www.phoronix.com/scan.php?page=article&item=debian_kfreebsd&num=1
License:
All rights reserved (I guess)


Rest:
Source: http://svn.schmehl.info/svn/talks/kfreebsd/trunk/
License:
Creative Commons SA 3.0 DE Lizenz, see http://creativecommons.org/licenses/by-sa/3.0/de/