Answer:
Red Hat Linux had stable and testing distributions. Stable was paid, testing was free. In 2003 Stable, or newly-renamed Red Hat Enterprise Linux would be available to corporations with consulting contracts, and individuals would be able to get the newly renamed Fedora, which was and is the testing distribution, only. Fedora Core is currently up to 11. Red Hat Enterprise Linux is up to 5. You can also get versions of RHEL from CentOS and White Box Linux with the trademarked and copyrighted materials (which are not gpl) taken out.

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