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Microsoft's Windows was the dominant desktop operating system (OS) worldwide as of December 2025, with a market share of around percent. Apple’s Mac operating systems have gained market share over the years, growing to command around a fifth of the market. Linux and Google's Chrome OS have retained small but stable market shares in recent years. 

Different versions of Microsoft Windows

Since its initial release in 1985, Microsoft Windows has gone through endless mutations. Notable versions include Windows 95, Windows XP, and Windows 7. Windows 11 is the newest addition to the family, being able to run on PCs, tablets and embedded devices. In 2022, approximately ** million PCs were shipped with Windows operating systems installed.

Apple’s Mac operating system

With an equally long history, Apple’s Mac operating system (macOS, previously Mac OS X and OS X) has also evolved through numerous releases. MacOS Ventura is the nineteenth release of macOS. A older version of macOS, Catalina, is currently the most popular macOS, now running on **** percent of Apple computers as of January 2023. macOS runs on Apple’s Mac computers, including the MacBook, which is Apple’s laptop PC product including the MacBook Pro and MacBook Air, and the iMac – Apple’s desktop computer.