Red Hat Enterprise Linux
Red Hat® Enterprise Linux® is the world’s leading enterprise Linux platform.* It’s an open source operating system (OS). It’s the foundation from which you can scale existing apps—and roll out emerging technologies—across bare-metal, virtual, container, and all types of cloud environments.
10 year support cycle as of RHEL 5
RHEL with Extended Life Cycle Support (ELS) adds additional support past the 10 year mark.
Community-driven free software effort focused on delivering a robust open source ecosystem around a Linux platform.
10 year support cycle as of CentOS 5
(released 07 Jul 2014, EOL 30 Jun 2024)
(released 10 Jul 2011, EOL 30 Nov 2020)
(released 12 Apr 2007, EOL 31 Mar 2017)
Ubuntu Server LTS
Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.
Ubuntu 20.04 (Focal Fossa)
(released 23 April 2020, EOL April 2025)
Ubuntu 18.04 (Bionic Beaver)
(released 26 April 2018, EOL April 2023)
Ubuntu 16.04 (Xenial Xerus)
(released 21 April 2016, EOL April 2021)
Ubuntu 14.04 (Trusty Tahr)
(released 17 April 2014, EOL April 2019)
Debian is an operating system for a wide range of devices including laptops, desktops and servers. Users like its stability and reliability since 1993. Debian provide reasonable default configuration for every package. The Debian developers provide security updates for all packages over their lifetime whenever possible.
Debian 11 (Bullseye)
Debian 10 (Buster)
Debian 9 (Stretch)
Debian 8 (Jessie)
SUSE Linux Enterprise Server
SUSE®, a global leader in innovative, reliable and enterprise-grade open source solutions, today announced its flagship Linux distribution has earned Common Criteria EAL 4+ certification. SUSE Linux Enterprise Server (SLES) 15 SP2 is now EAL 4+ level certified for IBM Z, Arm and x86-64 architectures, signifying compliance with the most-demanding security requirements for mission-critical infrastructure. SUSE's Common Criteria EAL 4+ software supply chain certification includes secure production, delivery of updates, and protection of critical digital assets.
SUSE Linux Enterprise Server 15
(released 29 Mar 2019, EOL 31 Mar 2029) Extended EOL: 31 Mar 2032
SUSE Linux Enterprise Server 12
(released 27 Oct 2014, EOL 31 Oct 2024) Extended EOL: 31 Oct 2027
SUSE Linux Enterprise Server 11
(released 24 Mar 2009, EOL 31 Mar 2019) Extended EOL: 31 Mar 2022
SUSE Linux Enterprise Server 10
(released 17 Jun 2006, EOL 31 Jul 2013)
An Open Source, community-governed and forever-free enterprise Linux distribution, focused on long-term stability, providing a robust production-grade platform. AlmaLinux OS is 1:1 binary compatible with RHEL® and pre-Stream CentOS.
10 year support cycle
Support AlmaLinux releases by contributing here.
Rocky Linux is a community enterprise operating system designed to be 100% bug-for-bug compatible with America's top enterprise Linux distribution now that its downstream partner has shifted direction. It is under intensive development by the community. Rocky Linux is led by Gregory Kurtzer, founder of the CentOS project. Contributors are asked to reach out using the communication options offered on this site.
10 year support cycle
Support RockyLinux releases by contributing here.