Does anyone else know about other notebook repositories that list notebooks?

In the forks of this notebook there is https://observablehq.com/@cobus/cobuss-collection-of-cool-notebooks ; I'm not aware of any other. I've stopped curating them here when observable added the "Trending / Most Liked" sections that helped a lot with discovery, and personal "likes" that help with memorizing. But it's not complete: would be very nice to be able to retrieve likes to make such lists, add tags to other people's notebooks, etc. (I'd suggest to discuss this on http://talk.observablehq.com/ rather than here.)