CentOS
Description
CentOS is a freely-available Linux distribution that is based on Red Hat's commercial product: Red Hat Enterprise Linux (RHEL). This rebuild project strives to be 100% binary compatible with the upstream product and, within its mainline and updates, not to vary from that goal. Additional software archives hold later versions of such packages, along with other Free and Open Source Software RPM-based packages. CentOS stands for Community ENTerprise Operating System.