macOS Tahoe wallpaper
Twenty-five years of Mac OS X and macOS

From Cheetah to Tahoe.

Every Mac OS X and macOS release, in order.
Nine big cats. Thirteen California places.

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A short history

The names tell a story.

Every modern Mac runs an operating system named after something real. Today, a lake in the Sierra Nevada. Before that, a national park. Before that, a county in California's wine country.

Apple's modern Mac operating system has carried twenty-two names since 2001. Not every year. But every time, on purpose. Together, they form a quiet portrait of the Mac itself.

Before Mac OS X, the names were simpler. System 1. System 7. Mac OS 9. Internal codenames came and went. Harmony. Allegro. Sonata. None of them reached customers.

In March 2001, Mac OS X arrived with a new kind of internal codename. An animal. Cheetah.

Two precursors don't make this list. Kodiak, the Mac OS X Public Beta, shipped in September 2000 for $29.95 — the first appearance of the Aqua interface, and the only paid beta in Apple's history. Hera, Mac OS X Server 1.0, shipped in March 1999 on the Rhapsody foundation, server-only and predating the consumer lineage. Both warmed up the cat era.

All 22 names

Every macOS name, in order.

These are all twenty-two names Apple has given the Mac operating system since Mac OS X shipped in March 2001, listed in release order with the date each one came out and the real animal or California place it was named after.

The first nine are big cats, running from Cheetah to Mountain Lion, and the thirteen since 2013 are places in California, running from a surf break near Half Moon Bay to Lake Tahoe on the Nevada border.

VersionNameReleasedNamed after
Mac OS X 10.0Cheetah24 March 2001the cheetah, a big cat
Mac OS X 10.1Puma25 September 2001the puma, a big cat
Mac OS X 10.2Jaguar23 August 2002the jaguar, a big cat
Mac OS X 10.3Panther24 October 2003the black panther, a big cat
Mac OS X 10.4Tiger29 April 2005the tiger, a big cat
Mac OS X 10.5Leopard26 October 2007the leopard, a big cat
Mac OS X 10.6Snow Leopard28 August 2009the snow leopard, a big cat
Mac OS X 10.7Lion20 July 2011the lion, a big cat
OS X 10.8Mountain Lion25 July 2012the mountain lion, a big cat
OS X 10.9Mavericks22 October 2013Mavericks (Pillar Point, Half Moon Bay), 29 miles from Apple Park
OS X 10.10Yosemite16 October 2014Yosemite National Park, 137 miles from Apple Park
OS X 10.11El Capitan30 September 2015El Capitan (Yosemite Valley), 137 miles from Apple Park
macOS 10.12Sierra20 September 2016Sierra Nevada, 211 miles from Apple Park
macOS 10.13High Sierra25 September 2017High Sierra (Mammoth Lakes area, eastern Sierra Nevada), 168 miles from Apple Park
macOS 10.14Mojave24 September 2018Mojave Desert, 365 miles from Apple Park
macOS 10.15Catalina7 October 2019Santa Catalina Island, 337 miles from Apple Park
macOS 11Big Sur12 November 2020Big Sur (Central California coast), 67 miles from Apple Park
macOS 12Monterey25 October 2021Monterey, California, 51 miles from Apple Park
macOS 13Ventura24 October 2022Ventura, California, 261 miles from Apple Park
macOS 14Sonoma26 September 2023Sonoma County, California, 71 miles from Apple Park
macOS 15Sequoia16 September 2024Sequoia National Park, 187 miles from Apple Park
macOS 26Tahoe15 September 2025Lake Tahoe (California / Nevada border), 154 miles from Apple Park
The wallpapers

Twenty-five years of desktops.

Every default macOS wallpaper, in order.
Hover any to see its name. Click for full size.

For more than a decade, every Mac OS X release wore a predator's name. Tiger. Leopard. Lion. Snow Leopard. Each one fierce. Each one fast.

Some choices surprised. Panther isn't a species at all. It's a black-coated leopard or jaguar. Mountain Lion, eleven years after Puma, names the same animal twice.

Then in 2013, the names changed.

That fall, Mac OS X 10.9 arrived with a different kind of name. Not an animal. A surf spot twenty-nine miles from Apple's headquarters. Mavericks. And for the first time, the update was free.

From Mavericks forward, every release would carry a California name. Yosemite. El Capitan. Sierra. High Sierra. Mojave. Catalina. Big Sur. Monterey. Ventura. Sonoma. Sequoia. Tahoe.

Real places. Most within driving distance of Apple Park.

In 2025, the version number changed too. Apple skipped from macOS 15 to macOS 26. Year-aligned. Unified with iOS, iPadOS, watchOS, tvOS, and visionOS.

The name that year was Tahoe.

macOS was no longer its own product. It was part of a single Apple.

The next story drops Tuesday. We make one of these every week.
You're in. See you Tuesday.
I. The Cats

2001 — 2013

Cheetah, Puma, Jaguar, Panther, Tiger, Leopard, Snow Leopard, Lion, Mountain Lion. For more than a decade, every Mac OS X release wore the name of a predator. Most lived thousands of miles from Cupertino.

Nine cats down. Stories like this, every Tuesday.
You're in. See you Tuesday.

Then in 2013, the cats ran out.
Apple came home.

II. The Map

2013 — today

Every macOS since Mavericks has been named after a place in California. Some are surf spots. Some are deserts. One is an island. Most are within driving distance of Apple Park.

You read all twenty-two. The next one's just as good.
You're in. See you Tuesday.

First the predators.

Then the places.

One Mac. All along.

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