Mac OS X 10.0

Mac OS X 10.0
Version of the macOS operating system
Developer	Apple Computer
OS family	Macintosh; Unix-like;
Source model	Closed, with open source components
General; availability	March 24, 2001
Latest release	10.0.4 / June 22, 2001
Platforms	PowerPC
Kernel type	Hybrid (XNU)
Default; user interface	Aqua
License	Apple Public Source License (APSL) and Apple end-user license agreement (EULA)
Preceded by	Mac OS 9; Mac OS X Public Beta;
Succeeded by	Mac OS X 10.1
Official website	Apple - Mac OS X at the Wayback Machine (archived June 29, 2001)
Tagline	The future is here. The power of UNIX with the simplicity and elegance of Macintosh.
Support status
	Historical, unsupported as of November 13, 2006[citation needed]

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Mac OS X 10.0 (code named Cheetah) is the first major release of Mac OS X, Apple's desktop and server operating system. It was released on March 24, 2001, for a price of $129 after a public beta.

Mac OS X was Apple's successor to the classic Mac OS. It was derived from NeXTSTEP and FreeBSD, and featured a new user interface called Aqua, as well as improved stability and security due to its new Unix foundations. It introduced the Quartz graphics rendering engine for hardware-accelerated animations. Many technologies were ported from the classic Mac OS, including Sherlock and the QuickTime framework. The core components of Mac OS X were open sourced as Darwin.

Boxed releases of Mac OS X 10.0 also included a copy of Mac OS 9.1,^[3] which can be installed alongside Mac OS X 10.0, through the means of dual booting (which meant that reboots are required for switching between the two OSes). This was important for compatibility reasons; while many Mac OS 9 applications could be run under Mac OS X in the Classic environment, some, such as applications that directly accessed hardware, could only run under Mac OS 9.^[3]

Six months after its release, Mac OS X 10.0 was succeeded by Mac OS X 10.1, code named Puma.

^ "Mac OS X Hits Stores This Weekend" (Press release). Apple Computer. March 21, 2001. Archived from the original on December 2, 2017. Retrieved January 11, 2018.
^ "Mac OS X Update 10.0.4". Archived from the original on April 11, 2004.
^ ^a ^b "Mac OS X missing some key elements". CNET. January 2, 2002. Archived from the original on January 10, 2023. Retrieved January 10, 2023.

[1] "Mac OS X Hits Stores This Weekend" (Press release). Apple Computer. March 21, 2001. Archived from the original on December 2, 2017. Retrieved January 11, 2018.

[2] "Mac OS X Update 10.0.4". Archived from the original on April 11, 2004.

[cnet-missing-3] "Mac OS X missing some key elements". CNET. January 2, 2002. Archived from the original on January 10, 2023. Retrieved January 10, 2023.

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