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Relative market adoption of operating systems
The usage share of an operating system is the percentage of computers running that operating system (OS). These statistics are estimates as usage data
Usage share of operating systems
Usage_share_of_operating_systems
Operating system that operates a mobile device
A mobile operating system is an operating system used for smartphones, tablets, smartwatches, smartglasses, or other non-laptop personal mobile computing
Mobile_operating_system
Operating system
operating system, the first operating system for the IBM 704. The main objective was to improve the sharing of programs. The SHARE Operating System provided
SHARE_Operating_System
Software that manages computer hardware resources
common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software
Operating_system
Computing resource shared by concurrent users
Heralds of Resource Sharing, a 1972 film. History of CP/CMS, IBM's virtual machine operating system (CP) that supported time-sharing (CMS). IBM M44/44X
Time-sharing
Family of computer operating systems
List of Unix programming books Market share of operating systems Plan 9 from Bell Labs Timeline of operating systems Unix time Year 2038 problem McIlroy
Unix
7094 1958 University of Michigan Executive System (UMES), for IBM 704, 709, and 7090 1959 SHARE Operating System (SOS), based on GM-NAA I/O 1960 IBSYS (IBM
Timeline_of_operating_systems
Processing Operating System) Multiple Console Time Sharing System (MCTS), from General Motors Research Puffin OS Convergent Technologies Operating System (CTOS)
List_of_operating_systems
Computer operating system
popular desktop operating system in the world, with a 76% market share as of September 2026[update], and the second-most popular operating system overall, behind
Microsoft_Windows
Family of IBM operating systems
family of virtual machine operating systems used on IBM mainframes including the System/370, System/390, IBM Z and compatible systems. It replaced the older
VM_(operating_system)
Computer software for running local area networks
described as network operating systems, because they allowed personal computers (PCs) to participate in computer networks and shared file and printer access
Network_operating_system
Computer operating system for applications with critical timing constraints
microcontrollers. It is distinct from a time-sharing operating system, such as Unix, which manages the sharing of system resources with a scheduler, data buffers
Real-time_operating_system
Core of a computer operating system
program at the core of a computer's operating system that always has complete control over everything in the system. The kernel is also responsible for
Kernel_(operating_system)
computer) operating systems. The article "Usage share of operating systems" provides a broader, and more general, comparison of operating systems that includes
Comparison of operating systems
Comparison_of_operating_systems
Operating system released in 1965
operating system, also known as the Pick system or simply Pick, is a demand-paged, multi-user, virtual memory, time-sharing computer operating system
Pick_operating_system
Computer operating system
Compatible Time-Sharing System (CTSS) was the first general purpose time-sharing operating system. Compatible Time Sharing is time sharing which is compatible
Compatible Time-Sharing System
Compatible_Time-Sharing_System
Operating system
Time Sharing Operating System, or TSOS, is a discontinued operating system for RCA mainframe computers of the Spectra 70 series. TSOS was originally designed
Time_Sharing_Operating_System
Operating system for mobile devices
"Tablet Operating System Market Share Worldwide". StatCounter Global Stats. Retrieved December 16, 2020. "Tablet Operating System Market Share Worldwide"
Android_(operating_system)
1969 operating system by BBN
operating system developed in 1969 by BBN for the PDP-10, which later formed the basis for Digital Equipment Corporation's TOPS-20 operating system.
TENEX_(operating_system)
Short-time bicycle rental service
of systems now operating in cities worldwide. Bicycle-sharing systems originated in grassroot efforts in Europe in the mid-1960s. By 2022, bike share schemes
Bicycle-sharing_system
Operating system
NOS (Network Operating System) is a discontinued operating system with time-sharing capabilities, written by Control Data Corporation in 1975. NOS ran
NOS_(operating_system)
1960s timesharing system for IBM mainframes
IBM Time Sharing System TSS/360 is a discontinued early time-sharing operating system designed exclusively for a special model of the System/360 line
TSS_(operating_system)
Discontinued operating system
The Dartmouth Time-Sharing System (DTSS) is a discontinued operating system first developed at Dartmouth College between 1963 and 1964. It was the first
Dartmouth_Time-Sharing_System
Operating system
The Universal Time-Sharing System (UTS) was an operating system for the Scientific Data Systems Sigma series of computers, succeeding Batch Processing
Universal_Time-Sharing_System
Time-sharing operating system
time-sharing operating system based on the concept of a single-level memory. It has been written that Multics "has influenced all modern operating systems
Multics
Topics referred to by the same term
computers SHARE Operating System Share (P2P), a Japanese P2P computer program, the successor to Winny share (company), a German consumer goods brand SHARE Cancer
Share
article covers the evolution of time-sharing systems, providing links to major early time-sharing operating systems, showing their subsequent evolution
Time-sharing_system_evolution
Linux distribution for anonymity and privacy
Gentoo-based Linux distribution. The original project was called Amnesia. The operating system was born when Amnesia was merged with Incognito. The Tor Project provided
Tails_(operating_system)
Computer operating system
operating system of macOS, iOS, watchOS, tvOS, iPadOS, audioOS, visionOS, and bridgeOS. It previously existed as an independent open-source operating
Darwin_(operating_system)
Time-sharing environment for IBM mainframe operating systems
Time Sharing Option (TSO) is an interactive time-sharing environment for IBM mainframe operating systems, including OS/360 MVT, OS/VS2 (SVS), MVS, OS/390
Time_Sharing_Option
Operating system
The Multiple Console Time Sharing System (MCTS) was an operating system developed by General Motors Research Laboratories in the 1970s for the Control
Multiple Console Time Sharing System
Multiple_Console_Time_Sharing_System
Use of Operative System by type of extremely powerful computer
supercomputer operating system is an operating system intended for supercomputers. Since the end of the 20th century, supercomputer operating systems have undergone
Supercomputer operating system
Supercomputer_operating_system
Series of Macintosh operating systems
Mac operating systems have been developed by Apple in a succession of two major series. In 1984, Apple debuted the operating system that is now known
Mac_operating_systems
Early-to-mid 1960s operating system for the scientific line of IBM mainframes
IBSYS was based on FORTRAN Monitor System (FMS) and (more likely) Bell Labs' "BESYS" rather than the SHARE Operating System. IBSYS directly supported several
IBM_7090/94_IBSYS
Chinese computer operating system
Neokylin have 90% market share of the government sector. A separate project using Ubuntu as the base Linux operating system was announced in 2013. The
Kylin_(operating_system)
Operating system
The Cray Time Sharing System, also known in the Cray user community as CTSS, was developed as an operating system for the Cray-1 or Cray X-MP line of
Cray_Time_Sharing_System
Experimental operating system from Microsoft Research
Singularity is an experimental operating system developed by Microsoft Research between July 9, 2003, and February 7, 2015. It was designed as a high dependability
Singularity (operating system)
Singularity_(operating_system)
Aspect of computing history
developed the SCOPE operating systems in the 1960s, for batch processing and later developed the MACE operating system for time sharing, which was the basis
History_of_operating_systems
Operating system by Apple
Copland is an operating system developed by Apple for Macintosh computers between 1994 and 1996 but never commercially released. It was intended to be
Copland_(operating_system)
Upcoming operating system developed by Google
Googlebook OS (codenamed Aluminium OS) is a desktop operating system created and developed by Google and Google DeepMind for the Googlebook series of computers
Googlebook_OS
("Aesop") is a discontinued experimental time-sharing operating system for the Scientific Data Systems Sigma 7 and its French clone, the CII 10070. Ésope
Ésope_(operating_system)
Apple operating system
Rhapsody is an operating system that was developed by Apple Computer after its purchase of NeXT in the late 1990s. It is the fifth major release of the
Rhapsody_(operating_system)
Operating system
The Livermore Time Sharing System (LTSS) was a supercomputer operating system originally developed by the Lawrence Livermore Laboratories for the Control
Livermore_Time_Sharing_System
Distributed operating system
distributed operating system started in 1995 at Bell Labs, which is now held by Vita Nuova Holdings and maintained by Terzarima Systems. Inferno was
Inferno_(operating_system)
Computer operating system
The BBN Time-Sharing System was an early time-sharing system created at Bolt, Beranek and Newman (BBN) for the PDP-1 computer. It began operation in September
BBN_Time-Sharing_System
User group for IBM mainframe computing
of the major origins of open source software. In 1959 SHARE released the SHARE Operating System (SOS), originally for the IBM 709 computer, later ported
SHARE_(computing)
System software for supercomputers
The Cray Operating System (COS) is a Cray Research operating system for its now-discontinued Cray-1 (1976) and Cray X-MP supercomputers. It succeeded the
Cray_Operating_System
Partnership in aviation
code sharing arrangements: Block space codeshare: A commercial (marketing) airline purchases a fixed number of seats from the administrating (operating/prime)
Codeshare_agreement
Family of Unix-like operating systems that use the Linux kernel
mobile phones List of operating systems Loadable kernel module Usage share of operating systems Timeline of operating systems Cloud computing, embedded
Linux
Product by Digital Equipment Corporation
Commercial Operating System (COS) is a discontinued family of operating systems from Digital Equipment Corporation. They supported the use of DIBOL, a
Commercial_Operating_System
Set of software frameworks for robot software development
Robot Operating System (ROS or ros) is an open-source robotics middleware suite. Although ROS is not an operating system (OS) but a set of software frameworks
Robot_Operating_System
Operating system
Sprite is an experimental Unix-like distributed operating system developed at the University of California, Berkeley by John Ousterhout's research group
Sprite_(operating_system)
Processing a software job non-interactively
monitors were IBM's Fortran Monitor System, SOS (Share Operating System), and finally IBSYS for IBM's 709x systems in 1960. Third-generation computers[clarification
Batch_processing
Time-sharing computer operating system
The Berkeley Timesharing System was a pioneering time-sharing operating system implemented between 1964 and 1967 at the University of California, Berkeley
Berkeley_Timesharing_System
Operating system virtualization paradigm
OS-level virtualization is an operating system (OS) virtualization paradigm in which the kernel allows the existence of multiple isolated user space instances
OS-level_virtualization
Computer operating system
multi-user, multiprocessing and virtual memory-based operating system. It is designed to support time-sharing, batch processing, transaction processing and workstation
OpenVMS
Free software collection
June 2025[update]), which can be used as an operating system or can be used in parts with other operating systems. Most of GNU is licensed under the GNU Project's
GNU
Operating system
Nemesis was an operating system that was designed by the University of Cambridge, the University of Glasgow, the Swedish Institute of Computer Science
Nemesis_(operating_system)
Service for short-term scooter rentals
A scooter-sharing system or kicksharing system is a shared transport service in which e-scooters are made available to use for short-term rentals. E-scooters
Scooter-sharing_system
Unix variant with real-time operating system capabilities
later renamed UNIX Real-Time (UNIX-RT), is a hybrid time-sharing and real-time operating system developed in the 1970s at Bell Labs for use in embedded
Multi-Environment_Real-Time
Historical account
The history of IBM mainframe operating systems is significant within the history of mainframe operating systems, because of IBM's long-standing position
History of IBM mainframe operating systems
History_of_IBM_mainframe_operating_systems
Discontinued modular real-time multiuser multitasking operating system
FlexOS is a discontinued modular real-time multiuser multitasking operating system (RTOS) designed for computer-integrated manufacturing, laboratory, retail
FlexOS
Linux-based operating system developed by Google
is a proprietary operating system designed and developed by Google. It is derived from the open-source ChromiumOS operating system (which itself is derived
ChromeOS
Operating system
Technologies Operating System, also known variously as CTOS, BTOS and STARSYS, is a discontinued modular, message-passing, multiprocess-based operating system. It
Convergent Technologies Operating System
Convergent_Technologies_Operating_System
Computer resource made available from one host to other hosts on a computer network
a shared disk, shared folder or shared document The term file sharing traditionally means shared file access, especially in the context of operating systems
Shared_resource
Open-source network operating system
abbreviated and stylized as SONiC, is a free and open source network operating system based on Linux. It was originally developed by Microsoft and the Open
SONiC_(operating_system)
General Electric were jointly developing an experimental time-sharing operating system called Multics for the GE-645 mainframe. Multics introduced many
History_of_Unix
Free and open-source mobile operating system based on LineageOS
/e/OS, formerly Eelo) is a fork of LineageOS, an Android-based mobile operating system, and associated online services. /e/ is presented as privacy software
/e/_(operating_system)
Large computer systems produced by IBM since 1952
division in 1956. IBM enhanced one of GM-NAA I/O's successors, the SHARE Operating System, and provided it to customers under the name IBSYS. As software
IBM_mainframe
general-purpose registers and a number of instructions to support a time-sharing operating system. The 1700 uses ones' complement arithmetic and an ASCII-based character
CDC_1700
Operating system
Angeles-based company. As a successor to gOS, Cloud was a lightweight operating system designed primarily for browsing the Internet on netbooks and mobile
Cloud_(operating_system)
Linux distribution developed by System76
extensions developed by System76, called COSMIC, an acronym for "Computer Operating System Main Interface Components" developed by System76. It featured separate
Pop!_OS
Early operating system for IBM 704
installations. SHARE Operating System, an operating system based on GM-NAA I/O. Multiple Console Time Sharing System Timeline of operating systems Resident
GM-NAA_I/O
operating system Operating System Projects System Commander System image Timeline of operating systems Usage share of operating systems This is a retronym coined
Comparison of user features of operating systems
Comparison_of_user_features_of_operating_systems
Operating system focused on disk-based file operations
A disk operating system (DOS) is a computer operating system that requires a hard disk (HDD), floppy disk, solid-state drive (SSD), or other direct-access
Disk_operating_system
Computer operating system
RSTS (/ˈrɪstɪs/) is a multi-user time-sharing operating system developed by Digital Equipment Corporation (DEC, now part of Hewlett-Packard) for the PDP-11
RSTS/E
Mobile operating system by Apple
iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple for its iPhone line of smartphones. It was unveiled in January 2007
IOS
Distributed operating system by Huawei
pinyin: Hóngméng Cāozuò Xìtǒng; trans. "Vast Mist") is a distributed operating system developed by Huawei for smartphones, tablets, smart TVs, smart watches
HarmonyOS
Means of entering commands to software
facilities in the Compatible Time-Sharing System (CTSS).[better source needed] From the early 1970s, the Unix operating system adapted the concept of a powerful
Command-line_interface
Computer operating system
MICA is the codename of the operating system developed for the DEC PRISM architecture. MICA was designed by a team at Digital Equipment Corporation led
DEC_MICA
Operating system
heavily modified variant of Digital Equipment Corporation's Monitor operating system (later renamed to, and better known as, "TOPS-10") for the PDP-6 and
WAITS
Biblically-themed operating system
TempleOS (formerly J Operating System, LoseThos, and SparrowOS) is a Biblical-themed lightweight operating system (OS) designed to be the Third Temple
TempleOS
1968 operating system for the PDP-8 computer
TSS/8 is a discontinued time-sharing operating system co-written by Don Witcraft and John Everett at Digital Equipment Corporation in 1967. DEC also referred
TSS/8
Operating system designed to operate on multiple systems over a network computer
A distributed operating system is system software over a collection of independent software, networked, communicating, and physically separate computational
Distributed_operating_system
Defunct time-sharing operating system for IBM mainframes
VP/CSS was a time-sharing operating system developed by National CSS. It began life in 1968 as a copy of IBM's CP/CMS, which at the time was distributed
VP/CSS
IBM operating system specializing in virtualization
CP/CMS (Control Program/Cambridge Monitor System) is a discontinued time-sharing operating system of the late 1960s and early 1970s. It is known for its
CP/CMS
Time-sharing operating system
Kronos is an operating system with time-sharing capabilities, written by Control Data Corporation in 1971. Kronos ran on the 60-bit CDC 6000 series mainframe
CDC_Kronos
Defunct time-sharing system software
University in the 1970s from an early IBM time-sharing system called RAX (Remote Access Computing System). The system ran on IBM S/360, S/370, and 4300-series
MUSIC/SP
Mainframe computer operating system
Program) is the operating system of the Burroughs B5000/B5500/B5700 and the B6500 and successors, including the Unisys Clearpath/MCP systems. MCP was originally
Burroughs_MCP
Operating system
NOS/VE (Network Operating System / Virtual Environment) is a discontinued operating system with time-sharing capabilities, written by Control Data Corporation
NOS/VE
Computer programming language interpreter
hardware version on which it ran, such as HP 2000C Time-Shared BASIC and the operating system came in different varieties — 2000A, 2000B, 2000C, High-Speed
HP_Time-Shared_BASIC
Operating system
together create a multi-user time-sharing operating system. CMS was originally developed as part of IBM's CP/CMS operating system. At the time, the acronym meant
Conversational_Monitor_System
User accessing a resource at the same time as another
operating system models such as time-sharing operating systems allow several users to access a resource on the computer at the same time. As system performance
Concurrent_user
Microkernel operating system
V operating system is a discontinued microkernel distributed operating system that was developed by faculty and students in the Distributed Systems Group
V_(operating_system)
1967 IBM mainframe model with virtual memory and 32-bit addressing
there was a market for time-sharing, it agreed to develop a new time-sharing operating system called IBM Time Sharing System (TSS/360) for delivery at roughly
IBM_System/360_Model_67
Operating system
Incompatible Timesharing System (ITS) is a time-sharing operating system developed principally by the MIT Artificial Intelligence Laboratory, with help
Incompatible Timesharing System
Incompatible_Timesharing_System
multi-user time-sharing operating system called Titan Supervisor. This was arguably the world's first commercially sold time-sharing operating system. Other experiments
Titan_(1963_computer)
Public bicycle sharing system in Canada
public bicycle sharing system originally serving the metropolitan area of Montreal, Quebec, Canada. Starting July 2025, it also operates in the city of
Bixi_(bicycle_share_system)
There are a number of Unix-like operating systems based on or descended from the Berkeley Software Distribution (BSD) series of Unix variant options.
Comparison of BSD operating systems
Comparison_of_BSD_operating_systems
This is a list of real-time operating systems (RTOSs). This is an operating system in which the time taken to process an input stimulus is less than the
Comparison of real-time operating systems
Comparison_of_real-time_operating_systems
travel, tourism, insurance
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SHARE OPERATING-SYSTEM
SHARE OPERATING-SYSTEM
SHARE OPERATING-SYSTEM
SHARE OPERATING-SYSTEM
SHARE OPERATING-SYSTEM
SHARE OPERATING-SYSTEM
SHARE OPERATING-SYSTEM
SHARE OPERATING-SYSTEM
travel, tourism, insurance