In the mid–1990s, Apple worked on an operating system called Copland, which was announced but never commercially released because of project management issues and feature creep. Parts of Copland were ...

The Basilisk II emulator can be used to run old versions of Mac OS 8 and System 7 on a modern Mac. Here's how to get started using it. Before macOS and OS X, there was Mac OS 9, and before that were ...

You can try Googlebook OS on your Apple Silicon Mac for free with gbos-vm, an open-source toolchain creating GPU-accelerated ...

Googlebook laptops are here, and modders have already gotten the operating system working on other devices. As Tweaktown ...

On March 24, 2001, a Saturday, Apple began allowing customers to purchase Mac OS X, the successor to the classic Mac OS. The first version of Mac OS X, "Cheetah," was famous for its "Aqua" interface ...

OS X may be retired, but it deserves to be remembered. Take a trip back with these 14 key milestones in the double-decade history of the operating system that helped transform a nearly bankrupt Apple ...

Many people remember Mac OS X 10.6.8 fondly. Not just 10.6 Snow Leopard, but particularly its very mature 10.6.8 release, the final one in that series. It’s considered a stable and perfectly fine ...

Apple has spent the last decade building and improving Mac OS X, fusing the classic Mac OS and technology acquired from Steve Jobs’s Next into an impressive mainstream operating system that’s widely ...

About nine months ago, I acquired a 13-inch MacBook Air. At that point, the first Ultrabooks had been announced but were not yet shipping. Even so, I might have waited, except that the Ultrabooks I’d ...

IntroductionA MacBook Air that she used during her university days. Since she bought a new PC and stopped using it, I turned ...

Back when Ars Senior Products Editor Andrew Cunningham was forced to work in Mac OS 9 by his colleagues in September 2014, he quickly hit a productivity wall. He couldn’t log in to his Ars e-mail or ...