Note: The headings on this list indicate the Macintosh System bundle names; the bullet points indicate the version of the System File included in that bundle.  This is to make it clearer for people searching for specific bundle versions as opposed to System File versions.  Finder File versions are not indicated.

Classic Mac OSEdit

Macintosh System Software (0 - 0.5)Edit

System File 1Edit

System File 2 Edit

System Software with HD20 SupportEdit

System File 2Edit

Macintosh System Software 0.7Edit

System File 3 Edit

System Software 1Edit

System File 3Edit

System Software 2Edit

System File 4Edit

System Software 5Edit

System File 4Edit

System Software 6Edit

System Software 7 "Blue"Edit

AKA "Big Bang," "M80," "Pleiades"

"System" designationEdit

Regular SystemsEdit
Performa SystemsEdit

"Mac OS" designationEdit

Mac OS 8 "Tempo"Edit

Mac OS 9 "Sonata"Edit

External LinksEdit

OS XEdit

Mac OS X ServerEdit

OS X Server 10.7 and later are software add-ons to the base OS, and do not get their own releases

Mac OS X Developer PreviewEdit

===Mac OS X Public Beta "Kodiak"=== (2000) OS X Public Beta runs on stock PowerMac G3 and G4 computers with 128MB RAM and their internal clock set to between September 13, 2000 and May 15, 2001.

Mac OS X 10.0 "Puma"Edit

Mac OS X 10.1 "Cheetah"Edit

Mac OS X 10.2 "Jaguar"Edit

Mac OS X 10.3 "Panther"Edit

Mac OS X 10.4 "Tiger"Edit

Mac OS X 10.5 "Leopard"Edit

Mac OS X 10.6 "Snow Leopard"Edit

After Mac OS X 10.6, all OS installs are provided via download.

Mac OS X 10.7 "Lion"Edit

Mac OS X 10.8 "Mountain Lion"Edit

OS X 10.9 "Mavericks"Edit

OS X 10.10 "Yosemite"Edit

OS X 10.11 "El Capitan"Edit

macOS 10.12 "Sierra"Edit

Current Version:

macOS 10.13 "High Sierra"Edit

Failed SystemsEdit

These systems were developed and in some cases were even functional before Apple officials applied the brakes; they were never officially released beyond Developer Previews.

Macintosh system software
Macintosh System: System 1 | System 2 | System 3 | System 4 | System 5 | System 6 | System 7
Mac OS: Mac OS 8 | Mac OS 9 | Mac OS X