Mac OS X Launched 25 Years Ago Today: 'The Future of the Mac'

[MacRumors]

Today marks the 25th anniversary of Apple launching Mac OS X, the operating system that serves as the foundation of modern-day macOS.

Apple released a public beta of Mac OS X in September 2000, and the operating system officially launched on March 24, 2001.

"Mac OS X is the future of the Mac, and we hope it will delight our customers with its unrivaled power and ease of use," said Steve Jobs, in 2001. "The Public Beta has generated incredible feedback and support from Mac users and developers, which has helped us to make Mac OS X the most advanced operating system ever."

Mac OS X was a next-generation, UNIX-based operating system for the Mac, succeeding the classic Mac OS operating system. It ushered in Apple's iconic "Aqua" interface, the Dock, an improved Finder app with hierarchical navigation, and more.

Mac OS X 10.0 screenshot via Stephen Hackett's gallery​

"Mac OS X is the most important software from Apple since the original Macintosh operating system in 1984 that revolutionized the entire industry," said Jobs.

In the U.S., Mac OS X was priced at $129. Apple stopped charging for macOS releases in 2013, when OS X Mavericks was released free of charge.

Mac OS X was renamed to OS X in 2012 and to macOS in 2016:

• Mac OS X 10.0 (2001): "Cheetah"
• Mac OS X 10.1 (2001): "Puma"
• Mac OS X 10.2 (2002): Jaguar
• Mac OS X 10.3 (2003): Panther
• Mac OS X 10.4 (2005): Tiger
• Mac OS X 10.5 (2007): Leopard
• Mac OS X 10.6 (2009): Snow Leopard
• Mac OS X 10.7 (2011): Lion
• OS X 10.8 (2012): Mountain Lion
• OS X 10.9 (2013): Mavericks
• OS X 10.10 (2014): Yosemite
• OS X 10.11 (2015): El Capitan
• macOS 10.12 (2016): Sierra
• macOS 10.13 (2017): High Sierra
• macOS 10.14 (2018): Mojave
• macOS 10.15 (2019): Catalina
• macOS 11 (2020): Big Sur
• macOS 12 (2021): Monterey
• macOS 13 (2022): Ventura
• macOS 14 (2023): Sonoma
• macOS 15 (2024): Sequoia
• macOS 26 (2025): Tahoe

Mac OS X was a big part of Apple's renaissance, which began when Jobs returned to the company in the late 1990s. Big hits in those first few years after his return included the iMac in 1998, the iBook in 1999, and Mac OS X and the iPod in 2001. In this sense, it is poetic that this milestone comes just a week ahead of Apple's 50th anniversary.

Article Link: Mac OS X Launched 25 Years Ago Today: 'The Future of the Mac'

 

[ImAlwaysRight]

I miss OS9

 

[HouseLannister]

I remember paying $30 for the beta.

 

[emmab2006]

And STILL remains the best operating system over Linux and Windows in my opinion ! though Linux has improved a lot in the past 2 years thanks to VALVE

 

[al256]

I remember paying $129 for it at CompUSA and installing it on my iMac. It was beautiful, completely different and limiting but I wanted the newest thing and couldn't ever go back to Mac OS 9.

 

[Max_G]

Snow Leopard. Ah... Now that was something! Hopefully someday Tahoe will mature in a similar way.

 

[derekamoss]

I remember it launched without a DVD player. Had to boot into classic to watch them lol. Loved it from the beginning though.

 

[jaysabol]

I had the beta and then the release on my beloved Cube. Wow!

 

[transpo1]

At the time, I had just graduated college and was forced to convert to Macs and OS9 to use Media Composer NLE editing software for my first job editing TV documentaries. In the next year, my father bought a Mac, and began learning Final Cut Pro. I then followed, buying my first Mac and converting to Final Cut Pro for all my films. Magical time 🖥️ ✨

I miss OS9

What a quaint but fun operating system it was. Maybe there's a simulator out there? 🙂

 

[Kissmo1980]

Am I the only one who wishes for a Snow Leopard UI upscaled to higher resolution? 🙂
It still remained my favorite Mac OS release.

 

[Moonjumper]

I remember Tiger well. It was on my first Mac. I loved it, but a lot of what it was good at has weakened. No nagging (the biggest reason I hated Windows, resulting in the switch), consistent UI (the same simple user interactions everywhere), and very user friendly (not hiding basic graphics settings in Accessibility).

 

[ceddy]

I remember getting OS X with my Powerbook G4 Titanium. The build quality was terrible, but man, it looked amazing compared to all the black plastic PCs. It really felt like a leap into the future. The only other time I've felt that was with the iPhone.

 

[k1121j]

I still have it on my bondi blue iMac in the basement

 

[syklee26]

Panther was my first mac. I never went back.

 

[kalsta]

… said Steve Jobs, in 2001. "The Public Beta has generated incredible feedback and support from Mac users and developers …”

He wasn’t wrong, and the amazing thing is, Apple actually listened to much of the feedback back then! They were exciting times.

 

[Andreas from Zurich]

I‘ve lost count. What iteration of NeXTSTEP are we currently using on our machines?

 

[Corefile]

I've been using it since Jaguar on an iMac 266mhz. It was sloooow.

 

[neuropsychguy]

OS X was groundbreaking in that it brought UNIX (BSD) to the masses. The early days were rough though during the transition. Some things were much better ("Classic" Mac OS was getting long in the tooth and had quite a few stability issues over the years), but OS X was sluggish for some years and it took time for the major applications to transition over to the new framework. There were also frequently encountered bugs, graphical glitches, and the new "Kernel Panic" screen that popped up regularly. Mac OS X 10.0 was basically a paid public beta. The operating system improved quickly, but the first year or two were rough.

That all laid the foundation for the excellent system we have today though.

 

[jgbr]

We all know which in that list was the best...

 

[JosephAW]

My favorite was Mac OS X 10.3 panther, that had the fastest search feature and it inherited the cache features of 10.2, but when they went to 10.4 spotlight slop, it took years to recover from the system slow down.
I think that’s the time I found a new app called Easyfind and am still using it in 2026. 😛

Too bad Apple wasn’t smart enough to release macOS 26 for Intel PCs to bring users over from Windows 11 and the upcoming Windows 12 subscription model and AI slop.

 

[KPOM]

We all know which in that list was the best...

Big Sur because it launched the Apple Silicon era.

 

[kalsta]

Mac OS X was priced at $129.

And we happily paid that at the time. Imagine if they charged even half of that for Tahoe—how many people would choose to ‘upgrade’? 🤔

 

[SactoGuy18]

MacOS X was important because it was essentially using the kernel code base from NeXTSTEP as the basis for future Mac operating system versions. And MacOS X code base became the basis for iPhone OS, the first version of what became iOS/iPadOS.

 

[ricketysquire]

I lost count after Mavericks. Apple needs to stop releasing new OSs every single year. It doesn't make sense, the Desktop/Laptop segment is a mature product. Mac OS can be a brilliant product if they'd just focus on making each release matter. That doesn't mean there shouldn't be point releases for security and bug fixes. But Tim Cook doesn't need to go on stage at WWDC and announce Mac OS 27, 28, 29, etc. every year. Just let it cook (pun intended). The world will not end if we don't get AI but customers will be annoyed with memory leaks and bugs on their brand new MacBook Pro M5 Pro on Mac OS 27. Remember Tiger came out in 2004, Leopard 2007, Snow Leopard 2009 and the world was fine for it.

And so is mobile. It made sense to release new IOSs every year when we were making leaps in hardware that supported new things in software. Like early versions of IOS didn't have copy/paste or desktop wallpapers and once there was better CPUs and more RAM features could be added.

Thank you for listening to my TED talk.

 

[jonnysods]

Came into the Mac ecoystem right as Tiger came out. Those were the days! Editing on a G4 iMac, couldn't believe how good it was, got a Intel 24" iMac the second it came out and never looked back.