EulerOS

EulerOS is a commercial Linux distribution developed by Huawei based on Red Hat Enterprise Linux to provide an operating system for server and cloud environments under Huawei Cloud B2B provider ecosystem. Its open-source community version is known as openEuler. The source code of openEuler was released by Huawei at Gitee in January 2020. openEuler became an open-source project operated by OpenAtom Foundation after Huawei donated the source code of openEuler to the foundation on 9 November 2021. A new programming language, Cangjie, for EulerOS and HarmonyOS was announced in September 2021. On March 27, 2020, openEuler 20.03 LTS version was released in the open source repo as the first Long Term Support (LTS) edition. openEuler 21.09 version launched with a new file system called EulerFS, also a kernel upgrade that is organized similar to classic HarmonyOS and OpenHarmony multi-kernel architecture that carries both RTOS kernel and Linux kernel on October 1, 2021. Also, the operating system supports, UniProton RTOS kernel and kubeOS containerised OS. EulerOS includes Apache HTTP Server which is known as Apache, as part of its supported tools on the platform. Huawei announced at Operating System Conference & openEuler Summit 2025 on November 14, 2025, a major milestone for openEuler open source operating system, aimed to exceed 16 million installations by the end of 2025. EulerOS 2.0, running on the Huawei KunLun Mission Critical Server, was certified in 2019 as conforming to the Single UNIX Specification (UNIX 03); however. the certification expired in September 2022. EulerOS/KunLun allows replacing central processing unit board modules and memory modules without stopping the OS.