Query4All.com
Open directories
Data generated from past analysis.
https://www.reddit.com/r/opendirectories/
https://en.wikipedia.org/wiki/Open_Directory
https://github.com/Devaro3/awesome-opendirectories
https://opendirsearch.abifog.com/
http://odp.org/
https://medium.com/@priyanshuahir01/open-directories-1f50141ea835
https://developer.apple.com/documentation/opendirectory
https://www.reddit.com/r/opendirectories/new/
https://twitter.com/OpenDirectories