Mac OS X Panther

Mac OS X 10.3Mac OS X v10.310.310.3 Panther10.3.9Mac OS X 10.3 PantherPanther10.3.4Mac OS X 10.3.9OS X 10.3
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.wikipedia
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Mac OS X Tiger

Mac OS X v10.4Mac OS X 10.4Mac OS X 10.4 Tiger
It followed Mac OS X 10.2 and preceded Mac OS X Tiger.
Tiger was released to the public on April 29, 2005 for US$129.95 as the successor to Mac OS X 10.3 Panther.

Mac OS X 10.2

Mac OS X v10.210.210.2.8
It followed Mac OS X 10.2 and preceded Mac OS X Tiger.
It superseded Mac OS X 10.1 and preceded Mac OS X Panther.

MacOS

Mac OS XOS XMac
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.
Apple rapidly developed several new releases of Mac OS X. Siracusa's review of version 10.3, Panther, noted "It's strange to have gone from years of uncertainty and vaporware to a steady annual supply of major new operating system releases."

XPostFacto

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.
It also allows more recent versions of Mac OS X to be installed on older G3 Macs which can only officially run earlier versions of OS X - for example, it allows Mac OS X v10.3 and Mac OS X v10.4 to run successfully on Beige G3s, 10.2 having been the last version supported by Apple.

Mission Control (macOS)

ExposéMission ControlMac OS X's Exposé
Exposé was first previewed on June 23, 2003 at the Apple Worldwide Developers Conference as a feature of the then forthcoming Mac OS X 10.3 Panther.

FileVault

FileVault 2
FileVault is a disk encryption program in Mac OS X 10.3 and later.

Preview (macOS)

PreviewPreview (Mac OS X)Preview (software)
The version of Preview included with OS X 10.3 could loop animated GIFs via an optional "play" button that could be added to the toolbar.

Safari (web browser)

SafariApple SafariSafari web browser
First released on desktop in 2003 with Mac OS X Panther, a mobile version has been bundled with iOS devices since the iPhone's introduction in 2007.

TextEdit

TextEdit application
The version included in Mac OS X v10.3 added the ability to read and write documents in Word format, and the version in Mac OS X v10.4 added the ability to read and write Word XML documents.

Internet Explorer for Mac OS X

Internet Explorer for MacInternet ExplorerInternet Explorer 5 for Mac OS
As a result of the five-year agreement between Apple and Microsoft in 1997, it was the default browser on the classic Mac OS and Mac OS X from 1998 until it was superseded by Apple's own Safari web browser in 2003 with the release of Mac OS X 10.3 "Panther".

Font Book

It was first released with Mac OS X Panther in 2003.

IChat

iChat AVApple iChatchat software
The final version of the software was shipped with Mac OS X 10.3 and became available separately on the same day for Mac OS X 10.2.

QuickTime

QuickTime PlayerQuickTime XApple QuickTime
QuickTime 6.4, released on October 16, 2003 for Mac OS X v10.2, Mac OS X v10.3, and Windows, added the following:

Xcode

Pixlet

Pixlet, while part of the cross-platform QuickTime, is only available on Macs running Mac OS X v10.3 or later.

Software versioning

versionversion numbermajor release
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.

Apple Inc.

AppleApple ComputerApple Inc
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.

Operating system

operating systemsOScomputer operating system
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.

New World ROM

New WorldNew World Macfirmware
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.

Power Macintosh G3

Power Macintosh G3 (Blue & White)Power Mac G3Power Macintosh G3 (Blue and White)
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.