I’m still using an Intel Mac on macOS 13 and 14 because I prefer a stable system rather than upgrading to the latest release every year. I only upgrade macOS when my work absolutely requires it — not for new features. To help myself choose the most suitable version when an upgrade becomes necessary, I keep a list of macOS releases and their dates as a reference.
| Year | Version | Codename | Release Date |
|---|---|---|---|
| 2025 | macOS 26 | Tahoe | 15/09/2025 |
| 2025 | macOS 15 | Sequoia | 16/09/2024 |
| 2024 | macOS 14 | Sonoma | 26/09/2023 |
| 2023 | macOS 13 | Ventura | 24/10/2022 |
| 2022 | macOS 12 | Monterey | 25/10/2021 |
| 2021 | macOS 11 | Big Sur | 12/11/2020 |
| 2020 | macOS 10.15 | Catalina | 07/10/2019 |
| 2019 | macOS 10.14 | Mojave | 24/09/2018 |
| 2018 | macOS 10.13 | High Sierra | 25/09/2017 |
| 2017 | macOS 10.12 | Sierra | 20/09/2016 |
| 2016 | OS X 10.11 | El Capitan | 30/09/2015 |
| 2015 | OS X 10.10 | Yosemite | 16/10/2014 |
| 2014 | OS X 10.9 | Mavericks | 22/10/2013 |
| 2013 | OS X 10.8 | Mountain Lion | 25/07/2012 |
| 2012 | OS X 10.7 | Lion | 20/07/2011 |
| 2011 | OS X 10.6 | Snow Leopard | 28/08/2009 |
| 2009 | OS X 10.5 | Leopard | 26/10/2007 |
| 2007 | OS X 10.4 | Tiger | 29/04/2005 |
| 2005 | OS X 10.3 | Panther | 24/10/2003 |
| 2003 | OS X 10.2 | Jaguar | 24/08/2002 |
| 2002 | OS X 10.1 | Puma | 25/09/2001 |
| 2001 | OS X 10.0 | Cheetah | 24/03/2001 |
| 2000 | Mac OS X Public Beta | Kodiak | 13/09/2000 |
| 1999 | Mac OS X Server 1.0 | Hera | 16/03/1999 |
| 1999 | Mac OS X Developer Preview | — | 16/03/1999 |
| 1997 | Rhapsody Developer Release | — | 31/08/1997 |