However, Red Hat Linux 9 was the last version in the Red Hat Linux product line, which was replaced by Fedora Core in late 2003. While Fedora is officially sponsored by Red Hat, it is developed with community participation, has a short life-span and serves mainly as a testing base for Red Hat Enterprise Linux.
جالبه تو اكثر رنكينگها اوبونتو اومده اول!
http://distrowatch.com/dwres.php?resource=major