Re: Understand...
"Nothing is really "FREE"".
I find your lack of faith disturbing ;)
FreeBSD is a derivative from Berkeley Unix but, as its name implies, the freely available variant of it. Of course the current FreeBSD is nothing like its ancestor and due to licensing issues also can't be considered an official Unix any more but it's quite clear that this OS has its roots within Unix. All funded by the FreeBSD foundation, a non-profit organization with one primary goal: to support FreeBSD. And the best part: the foundation is basically ran thanks to the support of dozens of people all around the world.
Now, please note: the only reason I started with FreeBSD is that this OS happens to be my personal favourite. But that doesn't make them unique nor do I allow myself to base myself solely on bias here.
Because there's also the awesome GNU Operating System, which most people would simply refer to as "Linux". Yeah, but there's more to that project than that. This whole endeavour is sponsored by the Free Software Foundation which also has a specific mission statement, one even broader than the FreeBSD foundation. The FSF stands for promoting computer user freedom. Where one of its tasks sits within GNU/Linux.
Or what about the Apache software foundation? Home of the highly acclaimed (and most dominating) Apache webserver, or the freely usable Java EE backend Tomcat.All freely available, right for the picking (download).
So yeah, you might want to be careful with statements such as yours.