I've been attending the O'Reilly Open Source Conference for years and have watched an interesting thing happen. A rising number of attendees have come with Mac OS X-based laptops. In fact ...

Emulators that run the Lisa OS have been available for some time now, but enthusiasts will be excited to explore the operating system's original source code on their own.

Lisa OS 3.1’s 1984 source Pascal code now available under a non-commercial license. ... during the early Mac era, and it was the equivalent of operating systems like macOS and Windows today.

Microsoft tested a Windows XP theme that closely resembled Mac OS X's Aqua GUI, reports The Verge.. A recent Windows XP source code leak has revealed various unreleased themes that Microsoft ...