OS family
Mac OS X / OS X / macOS
The modern Mac operating-system line, from Leopard through the Apple Silicon era and current macOS releases.
Follow the major-version line from Mac OS X Leopard to macOS Golden Gate, with release counts and support changes preserved from canonical research data.
Major releases
Major-version history
Each version opens a dedicated record with defining features, public point releases and device-support context.
- 2007Oct 26, 2007Open Mac OS X Leopard →
Version 10.5
Mac OS X Leopard
Time Machine Time Machine introduced automatic, visually navigable backup and restore.
- 2009Aug 28, 2009Open Mac OS X Snow Leopard →
Version 10.6
Mac OS X Snow Leopard
Performance and refinement Snow Leopard focused on hundreds of refinements and a smaller, faster system rather than a major interface redesign.
- 2011Jul 20, 2011Open Mac OS X Lion →
Version 10.7
Mac OS X Lion
Multi-Touch gestures and full-screen apps Lion brought more iPad-inspired Multi-Touch gestures and system-level full-screen application support to the Mac.
- 2012Jul 25, 2012Open OS X Mountain Lion →
Version 10.8
OS X Mountain Lion
Deeper iCloud integration Mountain Lion integrated iCloud more deeply across Apple applications and documents.
- 2013Oct 22, 2013Open OS X Mavericks →
Version 10.9
OS X Mavericks
iBooks and Maps come to the Mac Mavericks brought iBooks and Apple Maps to the Mac, extending services that had already become central on iPhone and iPad.
- 2014Oct 16, 2014Open OS X Yosemite →
Version 10.10
OS X Yosemite
A redesigned Mac interface Yosemite refreshed windows, toolbars, icons and typography with a cleaner, flatter visual language while preserving the familiar Mac desktop model.
- 2015Sep 30, 2015Open OS X El Capitan →
Version 10.11
OS X El Capitan
Split View and refined window management El Capitan made it easier to arrange windows and introduced Split View for working with two apps side by side in full screen.
- 2016Sep 20, 2016Open macOS Sierra →
Version 10.12
macOS Sierra
Siri comes to the Mac Sierra brought Siri to the Mac for desktop search, messaging, information lookup and other voice-driven tasks.
- 2017Sep 25, 2017Open macOS High Sierra →
Version 10.13
macOS High Sierra
Apple File System APFS became the modern file-system foundation for all-flash Mac storage.
- 2018Sep 24, 2018Open macOS Mojave →
Version 10.14
macOS Mojave
Enterprise content: Addresses an issue where file-sharing connections would potentially drop.
- 2019Oct 7, 2019Open macOS Catalina →
Version 10.15
macOS Catalina
Music, Podcasts, and TV replace iTunes Three focused media apps replaced the long-running all-in-one iTunes application on Mac.
- 2020Nov 10, 2020Open macOS Big Sur →
Version 11
macOS Big Sur
Major interface redesign Big Sur introduced a broad visual redesign across windows, controls, icons, and system chrome.
- 2021Oct 18, 2021Open macOS Monterey →
Version 12
macOS Monterey
FaceTime and SharePlay Monterey expanded FaceTime with spatial audio, Voice Isolation and Wide Spectrum modes, while SharePlay enabled synchronized media experiences during calls.
- 2022Oct 24, 2022Open macOS Ventura →
Version 13
macOS Ventura
Stage Manager Stage Manager introduced a new way to organize the active app and groups of windows.
- 2023Sep 26, 2023Open macOS Sonoma →
Version 14
macOS Sonoma
Interactive desktop widgets Widgets could be placed directly on the desktop and interact with compatible controls.
- 2024Sep 16, 2024Open macOS Sequoia →
Version 15
macOS Sequoia
iPhone Mirroring Continuity expanded with direct interaction with an iPhone from the Mac while the phone remained locked.
- 2025Sep 15, 2025Open macOS Tahoe →
Version 26
macOS Tahoe
Liquid Glass design Tahoe introduced Apple’s Liquid Glass visual language across the Mac interface.
- 2026Sep 14, 2026Open macOS Golden Gate →
Version 27
macOS Golden Gate
Siri AI macOS Golden Gate introduces a more personal, capable, and conversational Siri that can use personal context, work across apps, answer broader questions, and resume conversations in a dedicated Siri app.