macOS vs Linux: Core Differences, Origins, and Practical Choices

We often compare Linux and Windows, but what distinguishes macOS from Linux?

While Linux and Windows differ clearly, Linux and macOS appear similar to many, both running Unix commands in the terminal, yet not all Windows applications and games run on macOS or Linux.

Some think macOS is based on Linux, but it is not; despite similarities, macOS is a distinct system.

Origin

macOS traces its roots to Steve Jobs' NeXT computer company; technically it is built on the Mach kernel and Unix‑derived BSD.

NeXT developed NeXTSTEP, which Apple acquired, making NeXTSTEP the foundation of macOS.

Thus macOS combines Unix components with Apple’s proprietary technologies.

Conversely, Linux (the kernel) is a free, open‑source Unix alternative.

Linux itself is not a complete OS; it requires components like a desktop environment, resulting in many Linux distributions, which we collectively refer to as Linux operating systems.

macOS Kernel vs. Linux Kernel

The official name of the macOS kernel is XNU, standing for “XNU is Not Unix.” According to Apple’s GitHub, XNU merges Carnegie Mellon’s Mach microkernel with components from FreeBSD and a C++ API for drivers.

The BSD subsystem runs as a user‑space server in the microkernel architecture. Mach handles low‑level tasks such as multitasking, protected memory, virtual memory management, kernel debugging, and console I/O.

macOS combines microkernel (Mach) and monolithic kernel (BSD) traits, whereas Linux is a purely monolithic kernel managing CPU, memory, IPC, drivers, filesystems, and system calls.

Common Aspects

Both macOS and Linux can use Unix commands, bash/zsh, and other shells, though default shells may differ.

Historically, both offered fewer applications, but over the years their software ecosystems and game support have grown.

Codebase: Closed vs. Open Source

macOS is a closed‑source OS; you cannot view its full source code, though parts of its GNU libraries and the XNU kernel are available.

You cannot build a full macOS clone from these sources.

Lack of source code reduces transparency, though Apple argues it enhances security.

Open‑source software benefits from rapid community fixes, whereas closed‑source relies on limited internal resources.

Purpose and Use Cases

macOS is designed for desktops and laptops, excelling at video editing, graphic design, and audio production.

Linux can serve many purposes: client machines, IoT devices, single‑board computers, and servers.

Linux can be tailored to various use cases, while macOS is less flexible.

User Experience

macOS offers a pleasant UI with refined animations and high‑resolution assets.

Linux can provide similarly enjoyable interfaces, though the experience varies by distribution and desktop environment.

Distributions like Pop!_OS, Ubuntu, Zorin OS, or elementary OS offer polished experiences.

Customizability

macOS is not suited for deep customization, whereas Linux allows extensive modification of the OS.

Linux users can customize UI elements, but must invest time to avoid breaking the system.

Hardware Requirements

macOS requires Apple hardware, typically starting at 8 GB RAM and 256 GB storage, costing around $1,200 or more.

Linux can run on cheaper hardware, e.g., a $800 PC with 16 GB RAM and 512 GB SSD.

Hackintosh attempts exist but are less reliable than native Linux installations.

Software Ecosystem

Apple’s native apps provide first‑class experiences on macOS, often requiring purchase but offering one‑time licenses.

Linux offers excellent free and open‑source alternatives, though native macOS apps may be unavailable.

Software quality depends on the chosen Linux distribution.

Gaming on Linux and macOS

macOS has limited game support despite recent hardware improvements.

Linux runs many AAA and indie titles well, especially with Steam Deck support.

PC hardware prices are reasonable, offering strong gaming performance.

Package Management

Linux excels in package management with tools like Flatpak, Snap, and Synaptic.

macOS lacks a native package manager, but Homebrew provides convenient third‑party management and works on Linux as well.

System Updates

Apple does not publish a fixed OS update schedule; recent versions support roughly five years.

Linux offers LTS releases with five‑year support and optional ten‑year security updates, plus rolling releases for continuous upgrades.

Which Should You Choose?

macOS can be worth it for professional creative work, but is not necessary for basic tasks.

Linux has become a viable option for former Windows/macOS users, students, developers, and creatives.

Choosing Linux over macOS depends on personal preferences and requirements.