HPA

And of course a site that nees little introduction, which, as the title gives away, deals fully and exclusively with peanuts. Work of Christophe Tardy.

Plenty of plans, documentation, articles on this very popular class.

https://www.peanut-scale.fr/peanut-scale.html

A great links directory as well, no need to copy everything here, since it already existes:
https://www.peanut-scale.fr/a-liens.html