Here is a selection of european sites linked to natural wine.
Demeter
biodynamic agriculture certification
www.demeter.net
Les vins S.A.I.N.S.
without any additions or sulphites
vins-sains.org
Biodyvin
international union of winegrowers who apply biodynamic techniques
www.biodyvin.com
Vin méthode nature
French union for the defense of natural wines
www.vinmethodenature.org
PVN
Spanish producers’ association of natural wines
www.vinosnaturales.org
AVN
French association of natural wines
avn.vin
Vinatur
Italian association of natural wines
www.vinnatur.org
Raisin
the natural wine and food lovers app