Pantheon desktop from elementaryOS.

You can use it on their distro (Ubuntu based with lots of curated apps) or on its own (you can still get access to their curated apps, just not in the store)

EDIT: Sorry, I misunderstood. You want classic Mac. I'd say get Xfce4 and theme it yourself then.

• PlatiPlus for window manager theme
• Platinum Gtk2 Theme
• Platinum9 for the Icons

About 25 years ago, I used something called mlvwm which was designed to look like System 7.

I ran this on a 486 and later on a Duron system with something called "bochs" that let me run a full System 7 in a container.

A quick search shows that it is still around and has been forked by a couple of people.

If someone could port AUX's UI, that would be perfect.

And as a fellow System 6/7 fan, it's love, not masochistim. Long live the spatial Finder!

https://github.com/morgant/mlvwm

I found this post, but it refers to System 6: https://hexbear.net/post/786438

I did a quick search on r/unixporn (I just put in "System N") and found several posts, mostly about System 6 and System 9. Usually they post the links to the dotfiles in the comments. Good luck.

By the way, I don't think you'll find a specific distribution or desktop for what you want. You'll have to customize several things separately, look for documentation, dotfiles, etc.

Look into GNUstep and related projects maybe? I’m not sure how close it is to pre-NS Mac (that was OS X iirc?) but it might be close enough.

I’d love a “dark” classic Mac theme