CentOS (Community ENTerprise Operating System) aims to be a 100% compatible rebuild of RedHat Enterprise Linux (RHEL) versions, in full compliance with RedHat's redistribution requirements. It is for people who need an enterprise class OS without the cost of certification and support.

It closely resembles the look and feel of Fedora Core, but typically provides more widely-used versions of packages and applications. Package management is achieved via RPM or the YUM utility.

CentOS is an excellent choice for hosting resellers looking for an enterprise class distribution, stability, and well-tested and widely-used software.