Operating system families

family of computer operating systems developed by Microsoft

operating system created by Google for use on mobile devices

Unix (, ; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, the development of which started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties in the late 1970s, leading to a variety of both academic and commercial Unix variants from vendors including University of California, Berkeley (BSD), Microsoft (Xenix), Sun Microsystems (SunOS/Solaris), HP/HPE (HP-UX), and IBM (AIX).

free, open-source reimplementation of the AT&T UNIX operating system

operating system for Apple Mac

thumb|upright=1.8|Evolution of Unix and Unix-like systems, starting in 1969|class=skin-invert-image

graphical operating system (8-bit)

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. 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 November 9, 2021.

BharOS (formerly IndOS) is a closed-source, Android-based operating system developed by IIT Madras. It is funded by the Indian government, which intends to use it on government and public systems.

OpenHarmony (OHOS, OH) is a family of open-source distributed operating systems sharing some principles from Huawei LiteOS lineage. Huawei donated the pure HarmonyOS L0-L2 single framework branch, non-AOSP source code, to the OpenAtom Foundation. Similar to HarmonyOS, the open-source distributed operating system is designed with a layered architecture, consisting of four layers from the bottom to the top: the kernel layer, system service layer, framework layer, and application layer. It is also an extensive collection of free software, which can be used as an operating system or in parts with