https://en.wikipedia.org/wiki/Category:Facebook_software is comprehensive as far as I know. Even if you don’t use React, a lot of developers use it and control the web. So you might wander around the web that is written with React. But its no longer part of Facebook / Meta, so I don’t know if it still counts.
I asked for examples that I use. I haven’t seen one yet.
https://en.wikipedia.org/wiki/Category:Facebook_software is comprehensive as far as I know. Even if you don’t use React, a lot of developers use it and control the web. So you might wander around the web that is written with React. But its no longer part of Facebook / Meta, so I don’t know if it still counts.