OS/2 (Operating System/2) is a series of computer operating systems, initially created by Microsoft and IBM under the leadership of IBM software designer...

iPhone OS 2 is the second major release of the iOS mobile operating system developed by Apple Inc., being the successor to iPhone OS 1. It was the first...

iPhone OS was renamed iOS following the release of the iPad, starting with iOS 4. With iOS 13, Apple began offering a separate operating system, iPadOS, for...

Mac OS (originally System Software; retronym: Classic Mac OS) is the series of operating systems developed for the Macintosh family of personal computers...

the only device that runs watchOS. watchOS exposes an API called WatchKit for developer use. The second version, watchOS 2, included support for native...

Sailfish OS is a paid Linux-based operating system based on free software, and open source projects such as Mer as well as including a closed source UI...

OS 1 is the first major release of iOS, Apple's mobile operating system. It was succeeded by iPhone OS 2 on July 11, 2008. Development of iPhone OS 1...

iPhone OS 3 (stylized as iPhone OS 3.0) is the third major release of the iOS mobile operating system developed by Apple Inc., succeeding iPhone OS 2. It...

Wear OS (also known simply as Wear and formerly Android Wear) is a version of Google's Android operating system designed for smartwatches and other wearables...

HarmonyOS (HMOS) (Chinese: 鸿蒙; pinyin: Hóngméng) is a distributed operating system developed by Huawei for smartphones, tablets, smart TVs, smart watches...

Mac OS X Jaguar (version 10.2) is the third major release of macOS, Apple's desktop and server operating system. It superseded Mac OS X 10.1 and preceded...

control codes. The "best fit" mapping documents this behavior, too. The OS/2 operating system supports an encoding by the name of Code page 1004 (CCSID...

code in 2005 due to a lack of interest in Access Control Lists. In OS/2 version 1.2 and later, the High Performance File System was designed with extended...

In the graphical Workplace Shell (WPS) of the OS/2 operating system, a shadow is an object that represents another object. A shadow is a stand-in for any...

Palm OS (also known as Garnet OS) is a discontinued mobile operating system initially developed by Palm, Inc., for personal digital assistants (PDAs)...

Mac OS 9 is the ninth and final major release of Apple's classic Mac OS operating system, which was succeeded by Mac OS X 10.0 in 2001, starting the Mac...

(June 1987) FlexOS 386 2.0 (July 1989) FlexOS 386 2.30? FlexOS 386 2.31? FlexOS 386 2.32 (July 1993) FlexOS 386 2.33 (May 1998) FlexOS 386 2.34 (planned for...

Team OS/2 was an advocacy group formed to promote IBM's OS/2 operating system. Originally internal to IBM with no formal IBM support, Team OS/2 successfully...

the OS/2, eComStation, ArcaOS, Microsoft Windows (Windows NT family and Windows CE family), and ReactOS operating systems. On Windows CE .NET 4.2, Windows...

Embedded, IoT AI, Edge computing based operating system, HarmonyOS 2.0, was released on June 2, 2021, for phones, tablets, smartwatches, smart speakers, routers...

macOS. Zorin OS is available in various free and paid versions including versions using XFCE instead of GNOME for use with older computers. Zorin OS follows...

macOS, originally Mac OS X, previously shortened as OS X, is an operating system developed and marketed by Apple since 2001. It is the primary operating...

The history of macOS, Apple's current Mac operating system formerly named Mac OS X until 2011 and then OS X until 2016, began with the company's project...

iPhone OS 1 – derived from "Mac OS X" (now known as "macOS") iPhone OS 2 iPhone OS 3 iOS 4 – continued from iPhone OS 3 iOS 5 iOS 6 iOS 7 iOS 8 iOS 9 iOS 10...

The operating system used is Windows 3.0/3.1/95 and a graphical OS called Towns OS, based on MS-DOS and the Phar Lap DOS extender (RUN386.EXE). Most...

visionOS is a mixed reality operating system derived primarily from iPadOS core frameworks (including UIKit, SwiftUI, ARKit and RealityKit), and MR-specific...

AmigaOS is a family of proprietary native operating systems of the Amiga and AmigaOne personal computers. It was developed first by Commodore International...

z/OS is a 64-bit operating system for IBM z/Architecture mainframes, introduced by IBM in October 2000. It derives from and is the successor to OS/390...

the OS/2 box as a workstation too. NetWare for OS/2 shared memory on the system with OS/2 seamlessly. The book "Client Server survival Guide with OS/2" described...

RISC OS (/rɪsk.oʊˈɛs/) is a computer operating system originally designed by Acorn Computers Ltd in Cambridge, England. First released in 1987, it was...