http://www.gnu.org/distros/common-distros.en.html http://www.gnu.org/distros/common-distros.en.html This explains why many are not considered free, though the

http://www.gnu.org/distros/common-distros.en.html http://www.gnu.org/distros/common-distros.en.html This explains why many are not considered free, though the summary could simply be "the Linux kernel contains non-free blobs" and "they haven't promised not to allow non-free in their package repo's"