紅帽公司
Originally, Red Hat's enterprise product, then known as "Red Hat Linux", was made freely available to anybody who wished to download it, while Red Hat made money from support. Red Hat then moved towards splitting its product line into "Red Hat Enterprise Linux" which was designed to be stable and with long-term support for enterprise users and Fedora as the community distribution and project sponsored by Red Hat. The use of trademarks prevents verbatim copying of Red Hat Enterprise Linux.