DMOZ was and is freely licensed though. This one makes for a nice proof of concept, but there's no mention of availability or reusability for any of this data.

DMOZ had an interesting license, as I recall

https://en.wikipedia.org/wiki/Open_Directory_License

https://web.archive.org/web/20070813215202/http://www.dmoz.o...

"The Free Software Foundation describes the ODL as a non-free license"

But your point is a good one and well taken.

It was relicensed as CC-BY in 2011, however. AIUI, the ODL even predates CC.

You'll love Curlie which was created by a number of DMOZ alumni

https://curlie.org/