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; 18 years ago (2003-10-24)[1]
Latest release10.3.9 / April 15, 2005; 17 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 4, 2007

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

System requirements[edit]

Panther's 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 fails on these older machines.

Panther still fully supported the Classic environment for running older Mac OS 9 applications, but made Classic application windows double-buffered, interfering with some applications written to draw directly to 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]

  • Font Book: A font manager which simplifies viewing character maps, and adding new fonts that can be used systemwide. The app also allows the user to organize fonts into collections.
  • FileVault: On-the-fly encryption and decryption of a user's home folder.
  • iChat AV: The new version of iChat. Now with built-in audio- and video conferencing.
  • X11: X11 is built into Panther.
  • Safari: A new web browser that was developed to replace Internet Explorer for Mac when the contract between Apple and Microsoft ended, although Internet Explorer for Mac was still available. Safari 1.0 was included in an update in Jaguar but was used as the default browser in Panther.


Release history[edit]

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


Timeline of Macintosh operating systems
ARM architecture familyX86PowerPC68kMacBook Air (Apple silicon)iMac ProRetina MacBook ProMacBook AirApple–Intel architecturePower Mac G5Power Mac G4iMac G3Power MacintoshMacintosh QuadraMacintosh PortableMacintosh SE/30Macintosh IIMacintosh PlusMacintosh 128KmacOS VenturamacOS MontereymacOS Big SurmacOS CatalinamacOS MojavemacOS High SierramacOS SierraOS X El CapitanOS X YosemiteOS X MavericksOS X Mountain LionMac OS X LionMac OS X Snow LeopardMac OS X LeopardMac OS X TigerMac OS X PantherMac OS X 10.2Mac OS X 10.1Mac OS X 10.0Mac OS X Public BetaMac OS X Server 1.0A/UXA/UXA/UXMacWorks XLMacWorks XLSun RemarketingMacWorks XLMac OS 9Mac OS 9Mac OS 9Mac OS 8Mac OS 8Mac OS 8Mac OS 8System 7System 7System 7System 7System 6Classic Mac OSClassic Mac OSClassic Mac OSClassic Mac OSSystem 1Finder (software)Finder (software)Finder (software)Finder (software)Finder (software)Finder (software)Finder (software)


  1. ^ ""Night of the Panther" Kicks Off at 8:00 p.m. Tomorrow" (Press release). Apple Inc. October 23, 2003. Archived from the original on December 4, 2019. Retrieved December 4, 2019.
  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. Archived from the original on April 22, 2014. Retrieved February 22, 2010.
  4. ^ "One more cool cat". The Baltimore Sun. October 30, 2003. Archived from the original on October 8, 2021. Retrieved October 8, 2021. Those nostalgic for Mac OS 9 will celebrate the return of colored file labels in this menu.
Preceded by Mac OS X 10.3 (Panther)
Succeeded by