Red Hat Enterprise Linux (RHEL)

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Red Hat Enterprise Linux (RHEL) is a Linux distribution developed by Red Hat for the commercial market. Red Hat Enterprise Linux is released in server versions for x86-64, Power ISA, ARM64, and IBM Z and a desktop version for x86-64. All of Red Hat's official support and training, together with the Red Hat Certification Program, focuses on the Red Hat Enterprise Linux platform.

The first version of Red Hat Enterprise Linux to bear the name originally came onto the market as “Red Hat Linux Advanced Server”. In 2003, Red Hat rebranded Red Hat Linux Advanced Server to “Red Hat Enterprise Linux AS” and added two more variants, Red Hat Enterprise Linux ES and Red Hat Enterprise Linux WS.

Red Hat uses strict Trademark rules to restrict free re-distribution of their officially supported versions of Red Hat Enterprise Linux but still freely provides its source code. Third-party derivatives can be built and redistributed by stripping away non-free components like Red Hat's trademarks. Examples include community-supported distributions like CentOS and Scientific Linux and commercial forks like Oracle Linux. Fedora serves as its upstream source.

Source: https://en.wikipedia.org/wiki/Red_Hat_Enterprise_Linux

Datasheet
Developer	Red Hat, Inc
Written in
OS family	Unix Like
Working state	Open Source
Source model	22 February 2000
Initial release
Latest release	8.3 / October 29, 2020; 7.9 / September 29, 2020;
Available in	Multilingual
Platforms	x86-64; ARM64; IBM Z; IBM Power Systems
Kernel type	Linux
Default user interface	GNOME Shell
License	Various free software licenses, plus proprietary binary blobs
Official Website	https://redhat.com/en/technologies/linux-platforms/enterprise-linux