4 ms·

Traditionally "Mac OS" -> "[Mac] OS X" -> "macOS" It was often compacted to MacOS for various reasons, like brevity, keyword searchability and tagging.

• duaneb 10y ago
  I dunno, it's hard to get better search ability than what we had with "osx". Among other things, there are a lot of code bases with Mac OS 9 code hanging around in directories named "macos".
• rimantas 10y ago
  Apple has now standardized the names: iPS, tvOS, watchOS, macOS.