Apple’s macOS (previously called Mac OS X and OS X) has evolved massively since its first public release in 2001. Over the years, macOS has brought design overhauls, performance improvements, and brand-new features that shaped the modern Mac experience. Complete list of all macOS versions from 2001 to 2025 — including release date, version number, and highlights — so you can track the history of Apple’s desktop operating system. macOS Versions List (2001–2025) Year macOS Version Name Version Number Key Features 2001 Mac OS X 10.0 “Cheetah” 10.0 Aqua interface, dock, improved stability 2001 Mac OS X 10.1 “Puma” 10.1…