Classic Mac OS (English Wikipedia)

"Macintosh: System Software Version History". Apple Computer. August 7, 2001. Archived from the original on March 10, 2014. Retrieved September 25, 2016.
"Hard Disk 20: Boot From HD20 Locks Up HD20 and Macintosh". Apple Inc. November 10, 1988. Archived from the original on January 22, 2022. Retrieved January 21, 2022.; Denny, Bob (November 1985). "Programming for HFS Compatibility". MacTech Magazine. 2 (1). Westlake Village, CA: 8. Archived from the original on May 12, 2008. Retrieved May 2, 2008.
"What is an operating system (OS)?". Apple, Inc. July 15, 2004. Archived from the original on July 22, 2010. Retrieved September 6, 2014.
"Mac OS X: What is BSD?". Archived from the original on February 19, 2013. Retrieved September 23, 2016.

developer.apple.com

"New Mac OS Extended Format (HFS+) Available". Apple Developer News. 1997. Archived from the original on May 12, 2008. Retrieved March 28, 2007.
"The 68LC040 Emulator (IM: PS)". Apple Developer. July 3, 1996. Archived from the original on January 21, 2022. Retrieved December 26, 2021.
"What Can Be Translated?" (PDF). Universal Binary Programming Guidelines, Second Edition. Apple. Archived from the original (PDF) on August 3, 2012. Retrieved September 5, 2011.

images.apple.com

"Mac OS X and Unix – Apple" (PDF). Archived from the original (PDF) on May 30, 2009. Retrieved February 5, 2016.

product.info.apple.com

Apple Computer (December 20, 1996). "Apple Computer, Inc. Agrees to Acquire NeXT Software Inc". Archived from the original on January 16, 1999. Retrieved February 23, 2017.

applematters.com (Global: low place; English: low place)

"October 23, 1999: Mac OS 9 Released". AppleMatters.com. Archived from the original on October 28, 2009. Retrieved November 28, 2009.

archive.org (Global: 6^th place; English: 6^th place)

Wiggins, Robert (March 1998). "All Systems Go - System Update 5.0". MacUser. Martin Mazner. pp. 126–138.
"MacBulletin - Apple Pulls System 6.0.6". MacWorld Magazine. December 1990. p. 17.

arstechnica.com (Global: 473^rd place; English: 338^th place)

"OS X 10.1". October 15, 2001. Archived from the original on January 19, 2012. Retrieved June 14, 2017.

books.google.com (Global: 3^rd place; English: 3^rd place)

"Orchestrating applications". InfoWorld. September 24, 1990. p. 83. Archived from the original on March 25, 2021. Retrieved March 8, 2019.
Ean Houts (September 5, 1994). "QuickDraw GX is the big draw for System 7.5". InfoWorld. Archived from the original on October 20, 2021. Retrieved October 27, 2016. Apple has added a few features to spruce up the interface in System 7.5, although these have previously been available as utilities or shareware for quite some time.; Wood, Steve (June 18, 1999). "Busman's Holiday: Disappearing Software". Archived from the original on March 27, 2012.
Jeff Walsh (July 28, 1997). "Latest Mac OS pleases end-users". InfoWorld. Archived from the original on January 21, 2022. Retrieved October 30, 2020.; "Where do you want to pirate today?". Forbes. August 8, 1997. Archived from the original on August 27, 2017. Retrieved August 25, 2017. the latest word out in the Macwarez scene is that pirates shouldn't copy Apple's OS8—Mac's latest operating system—they should buy it, since Apple so desperately needs the money.

bostonglobe.com (Global: 657^th place; English: 344^th place)

Feeney, Mark (July 23, 2025). "At MoMA, designs for living". The Boston Globe. Retrieved August 4, 2025.{{cite web}}: CS1 maint: deprecated archival service (link)

bott.org (Global: low place; English: low place)

applemuseum.bott.org

"The Early Mac OS". Applemuseum.bott.org. Archived from the original on July 18, 2011. Retrieved July 29, 2014.

earlymacintosh.org (Global: low place; English: low place)

"Apple's developer CDs and their spawn". earlymacintosh.org. Retrieved June 1, 2025.
"Apple Macintosh before System 7". Archived from the original on November 21, 2011. Retrieved September 21, 2015.

emaculation.com (Global: low place; English: low place)

"Running Qemu-system-ppc with Mac OS/OSX guests in macOS". emaculation.com. emaculation. January 10, 2021. Archived from the original on December 30, 2021. Retrieved November 10, 2021.

folklore.org (Global: low place; English: low place)

Hertzfeld, Andy, folklore.org: The Original Macintosh: Mea Culpa, archived from the original on June 19, 2010, retrieved May 10, 2010
Bruce Horn. "On Xerox, Apple and Progress". Archived from the original on August 26, 2009. Retrieved September 1, 2009.
"Folklore.org: We're Not Hackers!". www.folklore.org. Archived from the original on September 27, 2016. Retrieved September 26, 2016.

forbes.com (Global: 71^st place; English: 54^th place)

Jeff Walsh (July 28, 1997). "Latest Mac OS pleases end-users". InfoWorld. Archived from the original on January 21, 2022. Retrieved October 30, 2020.; "Where do you want to pirate today?". Forbes. August 8, 1997. Archived from the original on August 27, 2017. Retrieved August 25, 2017. the latest word out in the Macwarez scene is that pirates shouldn't copy Apple's OS8—Mac's latest operating system—they should buy it, since Apple so desperately needs the money.

github.com (Global: 380^th place; English: 337^th place)

"Executor source code". GitHub. December 8, 2018. Archived from the original on January 2, 2018. Retrieved September 23, 2016.

infinitemac.org (Global: low place; English: low place)

"Infinite Mac". infinitemac.org. Retrieved July 7, 2026.

joshburker.com (Global: low place; English: low place)

Josh Burker (2002). "Multi-Mac". Archived from the original on August 22, 2016. Retrieved December 23, 2017.

lowendmac.com (Global: low place; English: low place)

"A Brief History of the Classic Mac OS – Low End Mac". July 26, 2012. Archived from the original on October 5, 2016. Retrieved September 23, 2016.
"System 7.5 and Mac OS 7.6: The Beginning and End of an Era". June 27, 2014. Archived from the original on September 24, 2016. Retrieved September 23, 2016. Mac OS 7.6 deserves some special mention. The most obvious difference is the name change; this was for the Mac clone manufacturers, who weren't making Macintoshes but "Mac OS Computers".

lyon.fr (Global: low place; English: low place)

imprimerie.lyon.fr

"Icônes by Susan Kare | MICG". Musée de l'Imprimerie et de la Communication Graphique. Retrieved August 6, 2025.

macgui.com (Global: low place; English: low place)

"Mac GUI". Archived from the original on July 14, 2011. Retrieved September 21, 2015.

mactech.com (Global: low place; English: low place)

preserve.mactech.com

Goodin, Sue; Wilson, Dave. "Programming the New Macs". MacTech. 3 (5). Archived from the original on June 24, 2022. Retrieved July 29, 2022.

mactech.com

"Hard Disk 20: Boot From HD20 Locks Up HD20 and Macintosh". Apple Inc. November 10, 1988. Archived from the original on January 22, 2022. Retrieved January 21, 2022.; Denny, Bob (November 1985). "Programming for HFS Compatibility". MacTech Magazine. 2 (1). Westlake Village, CA: 8. Archived from the original on May 12, 2008. Retrieved May 2, 2008.

macworld.com (Global: 3,602^nd place; English: 2,320^th place)

"Jobs: OS 9 is Dead, Long Live OS X – Macworld". Macworld. May 2002. Archived from the original on September 24, 2016. Retrieved September 23, 2016.

mathdittos2.com (Global: low place; English: low place)

Ean Houts (September 5, 1994). "QuickDraw GX is the big draw for System 7.5". InfoWorld. Archived from the original on October 20, 2021. Retrieved October 27, 2016. Apple has added a few features to spruce up the interface in System 7.5, although these have previously been available as utilities or shareware for quite some time.; Wood, Steve (June 18, 1999). "Busman's Holiday: Disappearing Software". Archived from the original on March 27, 2012.

moma.org (Global: 1,508^th place; English: 1,304^th place)

"Pirouette: Turning Points in Design". The Museum of Modern Art. Retrieved August 4, 2025.
"Susan Kare | MoMA". The Museum of Modern Art. Retrieved August 4, 2025.

nasa.gov (Global: 12^th place; English: 73^rd place)

"NASA Worm as Art, Museum of Modern Art Opens Exhibition Featuring NASA Worm". NASA. January 23, 2025. Retrieved August 4, 2025.

newsbank.com (Global: 492^nd place; English: 245^th place)

infoweb.newsbank.com

Clark, Don (June 11, 1988). "Long-Awaited System - Apple Adds Software To Speed Macintosh". San Francisco Chronicle. pp. B3. Retrieved June 11, 2026 – via NewsBank.

nostarch.com (Global: low place; English: low place)

Linzmayer, Owen W. (2004). Apple Confidential 2.0. No Starch Press. Archived from the original on November 13, 2016. Retrieved September 23, 2016.

qemu.org (Global: low place; English: low place)

wiki.qemu.org

"Documentation/Platforms/PowerPC". wiki.qemu.org. February 27, 2021. Archived from the original on December 20, 2021. Retrieved November 10, 2021.

sitepoint.com (Global: low place; English: low place)

Mike Tuck (August 12, 2001). "The Real History of the GUI". Archived from the original on January 3, 2022. Retrieved July 23, 2020.

stanford.edu (Global: 194^th place; English: 182^nd place)

library.stanford.edu

"The Macintosh Product Introduction Plan". Stanford University Libraries & Academic Information Resources. Archived from the original on July 21, 2010.

tech-insider.org (Global: low place; English: low place)

"United States Macintosh System Software 6.0.3 - Change History". Archived from the original on November 7, 2017. Retrieved November 5, 2017.

web.archive.org (Global: 1^st place; English: 1^st place)

Linzmayer, Owen W. (2004). Apple Confidential 2.0. No Starch Press. Archived from the original on November 13, 2016. Retrieved September 23, 2016.
"The Macintosh Product Introduction Plan". Stanford University Libraries & Academic Information Resources. Archived from the original on July 21, 2010.
"Mac OS 9.2.2 Document and Software". Apple Computer. December 5, 2001. Archived from the original on April 21, 2006. Retrieved September 25, 2016.
Morgenstern, David. "Useful command line tips for programmers and Mac managers". ZDNet. Archived from the original on July 28, 2020. Retrieved October 13, 2019.
"Macintosh: System Software Version History". Apple Computer. August 7, 2001. Archived from the original on March 10, 2014. Retrieved September 25, 2016.
"October 23, 1999: Mac OS 9 Released". AppleMatters.com. Archived from the original on October 28, 2009. Retrieved November 28, 2009.
Hertzfeld, Andy, folklore.org: The Original Macintosh: Mea Culpa, archived from the original on June 19, 2010, retrieved May 10, 2010
"A Brief History of the Classic Mac OS – Low End Mac". July 26, 2012. Archived from the original on October 5, 2016. Retrieved September 23, 2016.
Mike Tuck (August 12, 2001). "The Real History of the GUI". Archived from the original on January 3, 2022. Retrieved July 23, 2020.
Bruce Horn. "On Xerox, Apple and Progress". Archived from the original on August 26, 2009. Retrieved September 1, 2009.
"Folklore.org: We're Not Hackers!". www.folklore.org. Archived from the original on September 27, 2016. Retrieved September 26, 2016.
"System 7.5 and Mac OS 7.6: The Beginning and End of an Era". June 27, 2014. Archived from the original on September 24, 2016. Retrieved September 23, 2016. Mac OS 7.6 deserves some special mention. The most obvious difference is the name change; this was for the Mac clone manufacturers, who weren't making Macintoshes but "Mac OS Computers".
"New Mac OS Extended Format (HFS+) Available". Apple Developer News. 1997. Archived from the original on May 12, 2008. Retrieved March 28, 2007.
Goodin, Sue; Wilson, Dave. "Programming the New Macs". MacTech. 3 (5). Archived from the original on June 24, 2022. Retrieved July 29, 2022.
Josh Burker (2002). "Multi-Mac". Archived from the original on August 22, 2016. Retrieved December 23, 2017.
"Apple Macintosh before System 7". Archived from the original on November 21, 2011. Retrieved September 21, 2015.
"Hard Disk 20: Boot From HD20 Locks Up HD20 and Macintosh". Apple Inc. November 10, 1988. Archived from the original on January 22, 2022. Retrieved January 21, 2022.; Denny, Bob (November 1985). "Programming for HFS Compatibility". MacTech Magazine. 2 (1). Westlake Village, CA: 8. Archived from the original on May 12, 2008. Retrieved May 2, 2008.
"Mac GUI". Archived from the original on July 14, 2011. Retrieved September 21, 2015.
"System Software: Configs for Mac 128K, XL, 512, & 512KE (7/94)". Apple Inc. August 3, 1994. Archived from the original on February 24, 2008. Retrieved May 2, 2008.
"Orchestrating applications". InfoWorld. September 24, 1990. p. 83. Archived from the original on March 25, 2021. Retrieved March 8, 2019.
"The Early Mac OS". Applemuseum.bott.org. Archived from the original on July 18, 2011. Retrieved July 29, 2014.
"Macintosh: System Software Version History". Apple Inc. August 7, 2001. Archived from the original on April 20, 2008. Retrieved April 22, 2008.
"United States Macintosh System Software 6.0.3 - Change History". Archived from the original on November 7, 2017. Retrieved November 5, 2017.
"System 6.0.8L: ReadMe File (8/95)". Apple Inc. August 17, 1995. Archived from the original on April 26, 2012. Retrieved May 3, 2008.
Ean Houts (September 5, 1994). "QuickDraw GX is the big draw for System 7.5". InfoWorld. Archived from the original on October 20, 2021. Retrieved October 27, 2016. Apple has added a few features to spruce up the interface in System 7.5, although these have previously been available as utilities or shareware for quite some time.; Wood, Steve (June 18, 1999). "Busman's Holiday: Disappearing Software". Archived from the original on March 27, 2012.
Jeff Walsh (July 28, 1997). "Latest Mac OS pleases end-users". InfoWorld. Archived from the original on January 21, 2022. Retrieved October 30, 2020.; "Where do you want to pirate today?". Forbes. August 8, 1997. Archived from the original on August 27, 2017. Retrieved August 25, 2017. the latest word out in the Macwarez scene is that pirates shouldn't copy Apple's OS8—Mac's latest operating system—they should buy it, since Apple so desperately needs the money.
"Mac OS 9.2.2 Document and Software". Apple Inc. December 5, 2001. Archived from the original on April 21, 2006. Retrieved February 23, 2017.
"What is an operating system (OS)?". Apple, Inc. July 15, 2004. Archived from the original on July 22, 2010. Retrieved September 6, 2014.
"Mac OS X and Unix – Apple" (PDF). Archived from the original (PDF) on May 30, 2009. Retrieved February 5, 2016.
Apple Computer (December 20, 1996). "Apple Computer, Inc. Agrees to Acquire NeXT Software Inc". Archived from the original on January 16, 1999. Retrieved February 23, 2017.
"Mac OS X: What is BSD?". Archived from the original on February 19, 2013. Retrieved September 23, 2016.
"OS X 10.1". October 15, 2001. Archived from the original on January 19, 2012. Retrieved June 14, 2017.
"Jobs: OS 9 is Dead, Long Live OS X – Macworld". Macworld. May 2002. Archived from the original on September 24, 2016. Retrieved September 23, 2016.
"Executor source code". GitHub. December 8, 2018. Archived from the original on January 2, 2018. Retrieved September 23, 2016.
"The 68LC040 Emulator (IM: PS)". Apple Developer. July 3, 1996. Archived from the original on January 21, 2022. Retrieved December 26, 2021.
"Running Qemu-system-ppc with Mac OS/OSX guests in macOS". emaculation.com. emaculation. January 10, 2021. Archived from the original on December 30, 2021. Retrieved November 10, 2021.
"Documentation/Platforms/PowerPC". wiki.qemu.org. February 27, 2021. Archived from the original on December 20, 2021. Retrieved November 10, 2021.
"What Can Be Translated?" (PDF). Universal Binary Programming Guidelines, Second Edition. Apple. Archived from the original (PDF) on August 3, 2012. Retrieved September 5, 2011.

zdnet.com (Global: 1,235^th place; English: 855^th place)

Morgenstern, David. "Useful command line tips for programmers and Mac managers". ZDNet. Archived from the original on July 28, 2020. Retrieved October 13, 2019.

Classic Mac OS (English Wikipedia)

apple.com (Global: 70th place; English: 55th place)

docs.info.apple.com

support.apple.com

developer.apple.com

images.apple.com

product.info.apple.com

applematters.com (Global: low place; English: low place)

archive.org (Global: 6th place; English: 6th place)

arstechnica.com (Global: 473rd place; English: 338th place)

books.google.com (Global: 3rd place; English: 3rd place)

bostonglobe.com (Global: 657th place; English: 344th place)

bott.org (Global: low place; English: low place)

applemuseum.bott.org

earlymacintosh.org (Global: low place; English: low place)

emaculation.com (Global: low place; English: low place)

folklore.org (Global: low place; English: low place)

forbes.com (Global: 71st place; English: 54th place)

github.com (Global: 380th place; English: 337th place)

infinitemac.org (Global: low place; English: low place)

joshburker.com (Global: low place; English: low place)

lowendmac.com (Global: low place; English: low place)

lyon.fr (Global: low place; English: low place)

imprimerie.lyon.fr

macgui.com (Global: low place; English: low place)

mactech.com (Global: low place; English: low place)

preserve.mactech.com

mactech.com

macworld.com (Global: 3,602nd place; English: 2,320th place)

mathdittos2.com (Global: low place; English: low place)

moma.org (Global: 1,508th place; English: 1,304th place)

nasa.gov (Global: 12th place; English: 73rd place)

newsbank.com (Global: 492nd place; English: 245th place)

infoweb.newsbank.com

nostarch.com (Global: low place; English: low place)

qemu.org (Global: low place; English: low place)

wiki.qemu.org

sitepoint.com (Global: low place; English: low place)

stanford.edu (Global: 194th place; English: 182nd place)

library.stanford.edu

tech-insider.org (Global: low place; English: low place)

web.archive.org (Global: 1st place; English: 1st place)

zdnet.com (Global: 1,235th place; English: 855th place)

apple.com (Global: 70^th place; English: 55^th place)

archive.org (Global: 6^th place; English: 6^th place)

arstechnica.com (Global: 473^rd place; English: 338^th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

bostonglobe.com (Global: 657^th place; English: 344^th place)

forbes.com (Global: 71^st place; English: 54^th place)

github.com (Global: 380^th place; English: 337^th place)

macworld.com (Global: 3,602^nd place; English: 2,320^th place)

moma.org (Global: 1,508^th place; English: 1,304^th place)

nasa.gov (Global: 12^th place; English: 73^rd place)

newsbank.com (Global: 492^nd place; English: 245^th place)

stanford.edu (Global: 194^th place; English: 182^nd place)

web.archive.org (Global: 1^st place; English: 1^st place)

zdnet.com (Global: 1,235^th place; English: 855^th place)