List of Mac OS versions

Macintosh System Software 1

 * System 1.0 (128k / 512k)
 * System 1.1 (128k / 512k)

System Software 2

 * System 2.0 (128k / 512k)

System Software 3

 * System 3.0 (128k / 512k / 512ke / Plus)
 * System 3.1 (128k / 512k / 512ke / Plus)
 * System 3.2 (128k / 512k / 512ke / Plus)
 * System 3.3 (128k / 512k / 512ke / Plus)
 * System 3.4 (128k / 512k / 512ke / Plus)

System Software 4

 * System 4.0 (512k+)
 * System 4.1 (Plus+)


 * System 4.2 (Plus+)
 * System 4.3 (Plus+)

System Software 6

 * System 6.0  -- never released
 * System 6.0.1 -- release disputed
 * System 6.0.2 (68k)
 * System 6.0.3 (68k)
 * System 6.0.4 (68k)
 * System 6.0.5 (68k)
 * System 6.0.6 -- never released due to AppleTalk bug
 * System 6.0.7 (68k)
 * System 6.0.8 (68k)
 * System 6.0.8L -- never officially released from Apple

Regular Systems

 * System 7.0 (68k)
 * System 7.0.1 (68k)
 * System 7.1 (68k)
 * System 7.1.1 (68k) (System 7 Pro)
 * System 7.1.2 (PPC)
 * System 7.1.2P (68040)
 * System 7.5 (68k / PPC)

Performa Systems

 * System 7.0.1P (68k)
 * System 7.1P (68k)
 * System 7.1P1 (68k)
 * System 7.1P2 (68k)
 * System 7.1P3 (68k)
 * System 7.1P4 (68k)
 * System 7.1P5 (68k)
 * System 7.1P6 (68k)
 * System 7.5 (68k / PPC)

"Mac OS" designation

 * Mac OS 7.5.1 (24/32-bit 68k / PPC)
 * Mac OS 7.5.2 (24/32-bit 68k / PPC)
 * Mac OS 7.5.3 (24/32-bit 68k / PPC)
 * Mac OS 7.5.3L (Specific 68k hardware)
 * Mac OS 7.5.3 Revision 2 (24/32-bit 68k / PPC)
 * Mac OS 7.5.3 Revision 2.1 (24/32-bit 68k / PPC)
 * Mac OS 7.5.3 Revision 2.2 (24/32-bit 68k / PPC)
 * Mac OS 7.5.4 -- never offically released from Apple
 * Mac OS 7.5.5 (24/32-bit 68k / PPC)
 * Mac OS 7.6 (32-bit 68k / PPC) "Harmony"
 * Mac OS 7.6.1 (32-bit 68k / PPC)

Mac OS 8

 * Mac OS 8.0 (32-bit 68k / PPC)
 * Mac OS 8.1 (32-bit 68k / PPC)
 * Mac OS 8.5 (PPC)
 * Mac OS 8.5.1 (PPC)
 * Mac OS 8.6 (PPC)

Mac OS 9

 * Mac OS 9 (PPC All)
 * Mac OS 9.0.2 (PPC All)
 * Mac OS 9.0.3 (PPC All)
 * Mac OS 9.0.4 (PPC All)
 * Mac OS 9.1 (PPC with MMU)
 * Mac OS 9.2 (PPC G3+)
 * Mac OS 9.2.1 (PPC G3+)
 * Mac OS 9.2.2 (PPC G3+)

Mac OS X Developer Preview

 * Mac OS X DP 1
 * Mac OS X DP 2
 * Mac OS X DP 3
 * Mac OS X DP 4

Mac OS X 10.0 "Cheetah"

 * Mac OS X 10.0.0 (PPC G3+)
 * Mac OS X 10.0.1 (PPC G3+)
 * Mac OS X 10.0.2 (PPC G3+)
 * Mac OS X 10.0.3 (PPC G3+)
 * Mac OS X 10.0.4 (PPC G3+)

Mac OS X 10.1 "Puma"

 * Mac OS X 10.1.0 (PPC G3+)
 * Mac OS X 10.1.1 (PPC G3+)
 * Mac OS X 10.1.2 (PPC G3+)
 * Mac OS X 10.1.3 (PPC G3+)
 * Mac OS X 10.1.4 (PPC G3+)
 * Mac OS X 10.1.5 (PPC G3+)

Mac OS X 10.2 "Jaguar"

 * Mac OS X 10.2.0 (PPC G3+)
 * Mac OS X 10.2.1 (PPC G3+)
 * Mac OS X 10.2.2 (PPC G3+)
 * Mac OS X 10.2.3 (PPC G3+)
 * Mac OS X 10.2.4 (PPC G3+)
 * Mac OS X 10.2.5 (PPC G3+)
 * Mac OS X 10.2.6 (PPC G3+)
 * Mac OS X 10.2.7 (PPC G3+)
 * Mac OS X 10.2.8 (PPC G3+)

Mac OS X 10.3 "Panther"

 * Mac OS X 10.3.0 (PPC New World)
 * Mac OS X 10.3.1 (PPC New World)
 * Mac OS X 10.3.2 (PPC New World)
 * Mac OS X 10.3.3 (PPC New World)
 * Mac OS X 10.3.4 (PPC New World)
 * Mac OS X 10.3.5 (PPC New World)
 * Mac OS X 10.3.6 (PPC New World)
 * Mac OS X 10.3.7 (PPC New World)
 * Mac OS X 10.3.8 (PPC New World)
 * Mac OS X 10.3.9 (PPC New World)

Mac OS X 10.4 "Tiger"

 * Mac OS X 10.4.0 (PPC)
 * Mac OS X 10.4.1 (PPC)
 * Mac OS X 10.4.2 (PPC)
 * Mac OS X 10.4.3 (PPC)
 * Mac OS X 10.4.4 (PPC)
 * Mac OS X 10.4.5 (PPC)
 * Mac OS X 10.4.6 (PPC)
 * Mac OS X 10.4.7 (PPC/Intel)
 * Mac OS X 10.4.8 (PPC/Intel)
 * Mac OS X 10.4.9 (PPC/Intel)
 * Mac OS X 10.4.10 (PPC/Intel)
 * Mac OS X 10.4.11 (PPC/Intel)

Mac OS X 10.5 "Leopard"

 * Mac OS X 10.5.0 (PPCG4+/Intel)
 * Mac OS X 10.5.1 (PPCG4+/Intel)
 * Mac OS X 10.5.2 (PPCG4+/Intel)
 * Mac OS X 10.5.3 (PPCG4+/Intel)
 * Mac OS X 10.5.4 (PPCG4+/Intel)
 * Mac OS X 10.5.5 (PPCG4+/Intel)
 * Mac OS X 10.5.6 (PPCG4+/Intel)
 * Mac OS X 10.5.7 (PPCG4+/Intel)
 * Mac OS X 10.5.8 (PPCG4+/Intel)

Mac OS X 10.6 "Snow Leopard"

 * Mac OS X 10.6.0 (Intel + Rosetta)
 * Mac OS X 10.6.1 (Intel + Rosetta)
 * Mac OS X 10.6.2 (Intel + Rosetta)
 * Mac OS X 10.6.3 (Intel + Rosetta)
 * Mac OS X 10.6.4 (Intel + Rosetta)
 * Mac OS X 10.6.5 (Intel + Rosetta)
 * Mac OS X 10.6.6 (Intel + Rosetta)
 * Mac OS X 10.6.7 (Intel + Rosetta)
 * Mac OS X 10.6.8 (Intel + Rosetta)

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

Mac OS X 10.7 "Lion"

 * Mac OS X 10.7.0 (Intel)
 * Mac OS X 10.7.1 (Intel)
 * Mac OS X 10.7.2 (Intel)
 * Mac OS X 10.7.3 (Intel)
 * Mac OS X 10.7.4 (Intel)
 * Mac OS X 10.7.5 (Intel)

Mac OS X 10.8 "Mountain Lion"
Current Version:
 * Mac OS X 10.8.0
 * Mac OS X 10.8.1
 * Mac OS X 10.8.2
 * Mac OS X 10.8.3
 * Mac OS X 10.8.4
 * Mac OS X 10.8.5

OS X 10.9 "Mavericks"

 * OS X 10.9.0
 * OS X 10.9.1
 * OS X 10.9.2
 * OS X 10.9.3

Failed Systems
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.


 * Copland
 * Gershwin