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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, not supported |
| 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 Apple's classic Mac OS operating system, which was succeeded by Mac OS X 10.0 in 2001, starting the Mac OS X family of operating systems. 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.
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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