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  1. macOS - Wikipedia

    macOS (previously OS X and originally Mac OS X) is a proprietary Unix-based [7][8] operating system, derived from OPENSTEP for Mach and FreeBSD, which has been marketed and …

  2. The full list of all macOS versions until 2025 - Setapp

    Nov 24, 2025 · macOS is the operating system designed to run on Apple laptops and desktop computers. As Apple grew and strengthened the ecosystem through the years, macOS …

  3. What is macOS: Guide to Apple’s Operating System

    Mar 3, 2025 · Mac OS X marked a complete redesign of Apple’s operating system architecture. The journey began with Mac OS X Public Beta in 2000, followed by the official release of Mac …

  4. What is macOS? - GeeksforGeeks

    Jul 23, 2025 · macOS operating system that Apple Inc. developed especially for its Macintosh computer series. It is the replacement for the classic MacOS. The reliability, security features, …

  5. OS X - What is OS X - Apple (CA)

    OS X is the operating system that powers every Mac. Built on a rock-solid UNIX foundation, it’s engineered to take full advantage of what the hardware is capable of.

  6. What is OS X? | Definition from TechTarget

    Jun 20, 2023 · OS X, also referred to as macOS X or Mac OS X, is Apple's proprietary, Unix -based operating system. Released in 2001 as the successor to Mac OS 9, OS X incorporates …

  7. Apple macOS: everything you need to know about the major …

    Oct 17, 2025 · MacOS is essentially a condensed way of saying an operating system that runs on Mac computers. Before we dig into what makes macOS special, or sets it apart from …

  8. MacOS | Facts & History | Britannica

    Oct 10, 2025 · In 1996 Apple acquired rival NeXT Computers, which was founded by Steve Jobs after his departure from Apple, and in 2001 the company rolled out Mac OS X, a major …

  9. macOS: What It Is, How It Works, and Why It Matters

    macOS is the official operating system for Apple’s desktops and laptops. It was first launched in 2001 under the name Mac OS X, and has since gone through several name changes, from OS …

  10. what is macos x? (explore apple’s iconic operating system)

    but what exactly is macos x, and how did it become the operating system we know and love today? let’s dive in and explore the history, features, and impact of this iconic os. my first real …