IA-32 operating systems

operating system created by Google for use on mobile devices

personal computer operating system by Microsoft that was released in 2009

personal computer operating system by Microsoft that was released in 2015

personal computer operating system developed by Microsoft

personal computer operating system by Microsoft that was released in 2007

personal computer operating system by Microsoft that was released in 2012

personal computer operating system by Microsoft

personal computer operating system by Microsoft

personal computer operating system by Microsoft

FreeBSD is a free and open-source Unix-like operating system descended from the Berkeley Software Distribution (BSD). The first version was released in 1993 developed from 386BSD, one of the first fully functional and free Unix clones on affordable home-class hardware, and has since continuously been the most commonly used BSD-derived operating system.

personal computer operating system by Microsoft released in 2000

Unix operating system originally developed by Sun Microsystems

OpenBSD is a security-focused, free software, Unix-like operating system based on the Berkeley Software Distribution (BSD). Theo de Raadt created OpenBSD in 1995 by forking NetBSD 1.0. The OpenBSD project emphasizes portability, standardization, correctness, proactive security, and integrated cryptography.

personal computer operating system by Microsoft that was released in 2013

version of the Windows Server line of server operating systems, based on Windows XP

pre-emptive, graphical operating system by Microsoft

NetBSD is a free and open-source Unix-like operating system based on the Berkeley Software Distribution (BSD). It was the first open-source BSD descendant officially released after 386BSD was forked. It continues to be actively developed and is available for many platforms, including servers, desktops, handheld devices, and embedded systems.

version of the Windows Server line of server operating systems, based on Windows Vista and released in 2008

thumb|ReactOS 0.4.14 running the Firefox [[web browser]] ReactOS is a free and open-source operating system for i586/amd64 personal computers that is intended to be binary-compatible with computer programs and device drivers developed for Windows Server 2003 and later versions of Microsoft Windows. ReactOS has been noted as a potential open-source drop-in replacement for Windows and has been of interest for its information on undocumented Windows APIs.

free/libre/open source operating system inspired by BeOS and compatible with its version 5

32-bit cross-platform operating system developed by Microsoft and the first member of the Windows NT family that was released on July 27, 1993

thin client operating system from Microsoft

Tizen () is a Linux-based operating system primarily developed by Samsung Electronics and supported by the Linux Foundation.

sixth major release of OS X

32-bit cross-platform operating system developed by Microsoft

core Unix-like operating system of macOS, iOS, etc.

distributed operating system designed by Bell Labs as an UNIX's intended successor

32-bit cross-platform operating system developed by Microsoft

seventh major release of OS X

MenuetOS is an operating system with a monolithic preemptive, real-time kernel written in FASM assembly language. The system also includes video drivers. It runs on 64-bit and 32-bit x86 architecture computers. Its author is Ville M. Turjanmaa. It has a graphical desktop, games, and networking abilities (TCP/IP stack). One distinctive feature is that it fits on one floppy disk.

fifth major release of Mac OS X

VxWorks is a real-time operating system (or RTOS) developed as proprietary software by Wind River Systems, a subsidiary of Aptiv. First released in 1987, VxWorks is designed for use in embedded systems requiring real-time, deterministic performance and in many cases, safety and security certification for industries such as aerospace, defense, medical devices, industrial equipment, robotics, energy, transportation, network infrastructure, automotive, and consumer electronics.

operating system

operating system

HelenOS is an operating system based on a multiserver microkernel design. The source code of HelenOS is written in C and published under the BSD-3-Clause license.

free real-time operating system

real-time operating system (RTOS) software

Genode is a novel OS architecture that aims to improve software safety by applying a strict organizational structure to all software components including device drivers, system services, and applications.

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

real time operating system

Apache NuttX is a free and open-source real-time operating system (RTOS) with an emphasis on technical standards compliance and on having a small footprint. It is scalable from 8-bit to 64-bit microcontroller environments. The main governing standards in NuttX are from the Portable Operating System Interface (POSIX) and the American National Standards Institute (ANSI). Further standard application programming interfaces (APIs) from Unix and other common RTOSes (such as VxWorks) are adopted for functions unavailable under these standards, or inappropriate for deeply embedded environments, such

PikeOS is a commercial hard real-time operating system (RTOS) which has a separation kernel-based hypervisor that supports multiple logical partition types for various operating systems (OS) and applications, each referred to as a GuestOS. PikeOS is engineered to support the creation of certifiable smart devices for the Internet of Things (IoT). In instances where memory management units (MMU) are not present but memory protection units (MPU) are available on controller-based systems, PikeOS for MPU is designed for critical real-time applications and provides up-to-standard safety and security