An anonymous reader said, "Both CentOS and Scientific are straighforward recompilations of RHEL,
with trademarks, logos, etc., removed. It's no surprise you found them
much alike, because they are essentially identical. Flash and any
other closed source non-FOSS products violate Red Hat's policy on FOSS,
and leave it -- and the customers it indemnifies -- vulnerable to law
suits. Ditto CentOS and Fedora. While RHEL/CentOS can be tweaked
to make it an acceptable desktop (at least for my purposes) both are
quite obviously enterprise products, and marketed as such."