Mac OS X was released on this day 24 years ago. On this anniversary, here it is on the web: https://infinitemac.org/2001/Mac%20OS%20X%2010.1 (technically 10.1, but that’s the first release that actually worked acceptably)
Infinite Mac has a more complete collection at https://infinitemac.org/?filter=macosx, and https://blog.persistent.info/2025/03/infinite-mac-os-x.html is a blog post with technical details (two separate emulators are involved).
Enjoy!
And I know #MARCHintosh is more about classic Macs, but you can run older software here too.
Create a custom instance with both 10.1 and 9.2.2 mounted, and then Classic can be started from System Preferences: https://infinitemac.org/run?disk=Mac+OS+X+10.1&disk=Mac+OS+9.2.2&infinite_hd=true&saved_hd=true&machine=Power+Macintosh+G3+%28Beige%29
@mihaip Thank you for these! I don't see my existing PowerBook G4 Ti's making it into the next decade, so its nice to have a way to still play with these earlier versions of OS X.