Yes and no.
Red Hat is a GNU/Linux distribution. FreeBSD and NetBSD are not. They are, as their names imply,
BSDs.
BSD and GNU/Linux are both open-source unix-like operating systems, but they are significantly different from one another.
This page does a good overview of the main differences:
http://www.over-yonder.net/~fullermd...bsd4linux1.php