Mac OS X Panther

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Mac OS X 10.3 Panther
A version of the macOS operating system
Mac OS X Panther (logo).png
AM MacOSX Panther.png
Screenshot of Mac OS X Panther. Notice how the Finder icon in the Dock has been changed and Internet Explorer has been replaced by Safari.
DeveloperApple Computer, Inc.
OS family
Source modelClosed, with open source components
Released to
October 24, 2003; 16 years ago (2003-10-24)[1]
Latest release10.3.9 / April 15, 2005; 15 years ago (2005-04-15)[2]
Kernel typeHybrid (XNU)
LicenseApple Public Source License (APSL) and Apple end-user license agreement (EULA)
Preceded byMac OS X 10.2 Jaguar
Succeeded byMac OS X 10.4 Tiger
Official websiteApple - Mac OS X at the Wayback Machine (archived January 11, 2005)
Support status
Unsupported as of March 22, 2008
Part of a series on

Mac OS X Panther (version 10.3) is the fourth major release of Mac OS X (now named macOS), Apple's desktop and server operating system. It followed Mac OS X 10.2 and preceded Mac OS X Tiger. Apple released Panther on October 24, 2003.

System requirements[edit]

The system requirements are:[3]

  • PowerPC G3, G4, or G5 processor (at least 233 MHz)
  • Built-in USB
  • At least 128 MB of RAM (256 MB recommended, minimum of 96 MB supported unofficially)
  • At least 1.5 GB of available hard disk space
  • CD drive
  • Internet access requires a compatible service provider; iDisk requires a .Mac account

Video conferencing requires:

  • 333 MHz or faster PowerPC G3, G4, or G5 processor
  • Broadband internet access (100 kbit/s or faster)
  • Compatible FireWire DV camera or web camera

Since a New World ROM was required for Mac OS X Panther, certain older computers (such as beige Power Mac G3s and 'Wall Street' PowerBook G3s) were unable to run Panther by default. Third-party software (such as XPostFacto) can, however, override checks made during the install process; otherwise, installation or upgrades from Jaguar will fail on these older machines.

Panther still supported the Classic environment fully for running older Mac OS 9 applications but made Classic application windows double-buffered, which interfered with some applications expecting to directly draw to the screen.

New and changed features[edit]

End-user features[edit]

Apple advertised that Mac OS X Panther had over 150 new features, including:

New applications in Panther[edit]


Release history[edit]

Version Build Date OS name Notes
10.3 7B85 October 24, 2003 Darwin 7.0 Original retail release set
7B86 Server Edition
10.3.1 7C107 November 10, 2003 Darwin 7.1 Mac OS X Update 10.3.1: Information and Download
10.3.2 7D24 December 17, 2003 Darwin 7.2 Mac OS X: About the Mac OS X 10.3.2 Update
7D28 Updated retail release
10.3.3 7F44 March 15, 2004 Darwin 7.3 Mac OS X: About the Mac OS X 10.3.3 Update (Combo)
10.3.4 7H63 May 26, 2004 Darwin 7.4 About the Mac OS X 10.3.4 Update
10.3.5 7M34 August 9, 2004 Darwin 7.5 About the Mac OS X 10.3.5 Update (Delta); Updated retail release set
10.3.6 7R28 November 5, 2004 Darwin 7.6 About the Mac OS X 10.3.6 Update (Delta)
10.3.7 7S215 December 15, 2004 Darwin 7.7 About the Mac OS X 10.3.7 Update (Delta)
10.3.8 7U16 February 9, 2005 Darwin 7.8 About the Mac OS X 10.3.8 Update (Delta)
10.3.9 7W98 April 15, 2005 Darwin 7.9 About the Mac OS X 10.3.9 Update (Delta)


  1. ^ ""Night of the Panther" Kicks Off at 8:00 p.m. Tomorrow" (Press release). Apple Inc. October 23, 2003.
  2. ^ "Mac OS X Combined Update 10.3.9". Apple Inc. Archived from the original on April 19, 2005.
  3. ^ "Mac OS X Panther: System requirements". Apple. Retrieved February 22, 2010.
Preceded by
Mac OS X 10.2 (Jaguar)
Mac OS X 10.3 (Panther)
Succeeded by
Mac OS X 10.4 (Tiger)