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| Version of the classic Mac OS operating system | |
 | |
 Screenshot of Mac OS 9.0.4 | |
| Developer | Apple Computer |
|---|---|
| OS family | Macintosh |
| Working state | Historic, unsupported |
| Source model | Closed source |
| Released to manufacturing | October 23, 1999[1][2][3] |
| Latest release | 9.2.2 / December 5, 2001[4] |
| Platforms | PowerPC |
| Kernel type | Nanokernel |
| Default user interface | Apple Platinum |
| License | Proprietary |
| Preceded by | Mac OS 8 |
| Succeeded by | |
| Official website | Apple - Products - Mac OS 9 at the Wayback Machine (archived November 9, 2000) |
| Tagline | Your Internet co-pilot. |
| Support status | |
| Historical, unsupported as of February 1, 2002 | |
| Part of a series on |
| Classic Mac OS |
|---|
 |
Mac OS 9 is the ninth and final major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer. Introduced on October 23, 1999, it was promoted by Apple as "The Best Internet Operating System Ever",[5] highlighting Sherlock 2’s Internet search capabilities, integration with Apple's free online services known as iTools and improved Open Transport networking.
While Mac OS 9 lacks protected memory and full pre-emptive multitasking,[6] lasting improvements include the introduction of an automated Software Update engine and support for multiple users. It was succeeded by Mac OS X 10.0 in 2001, the first version of the Mac OS X (now macOS) family of operating systems.
Apple discontinued development of Mac OS 9 in late 2001, transitioning all future development to Mac OS X. The final updates to Mac OS 9 addressed compatibility issues with Mac OS X while running in the Classic Environment and compatibility with Carbon applications. At the 2002 Worldwide Developers Conference, Steve Jobs began his keynote address by staging a mock funeral for OS 9.[7]
- ^ "October 23, 1999: Mac OS 9 Released". AppleMatters. Retrieved 2009-11-28.
- ^ "October 23, 1999: Mac OS 9 Released [Archive] - Mac Forums". Retrieved 2009-11-28.
- ^ "October 23, 1999: Mac OS 9 Released MacBytes.com". MacRumors.com. Retrieved 2009-11-28.
- ^ https://support.apple.com/kb/DL1293?locale=en_US
- ^ "October 23, 1999: Mac OS 9 Released". AppleMatters.com. Archived from the original on 2009-10-28. Retrieved 2009-11-28.
- ^ "Re: newbie question: What is a Blue Task". Apple.com. Archived from the original on 2007-10-13. Retrieved 2007-03-29.
- ^ "Apple WWDC 2002-The Death Of Mac OS 9". YouTube.com. Archived from the original on 2010-04-18. Retrieved 2010-03-16.
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