I just had to write about it because of all the hard work that most likely went into doing this although the author is downgrading this to just "around 6 days of programming". I was strolling through Github repositories looking for something cool and I found it: Win11 in React.
If you go to https://win11.blueedge.me/ you'll reach a copy of Windows 11 made in React.
The best part? The code is open source and can be found here: https://github.com/blueedgetechno/win11React
I think this is a great open-source project. Let me know what you think!