CentOS is a Linux distribution that attempts to provide a free, enterprise-class, community-supported computing platform which aims to be functionally compatible with its upstream source, Red Hat Enterprise Linux (RHEL).
Fedora is an operating system based on the Linux kernel, developed by the community-supported Fedora Project and owned by Red Hat. Fedora contains software distributed under a free and open source license.
Red Hat Enterprise Linux (RHEL) is a Linux distribution developed by Red Hat and targeted toward the commercial market.
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