How to obtain the Nautilus gas-grain model? We provide a public version of the Nautilus gas-grain code developed in our team (pnautilus. To obtain the code, go to the git repository:https://forge.oasu.u-bordeaux.fr/LAB/astrochem-tools/pnautilus We strongly advise to subscribe to our mailing list, which we use to inform of any upload on the code. To do so, you need to send to send an email to sympa@diff.oasu.u-bordeaux.fr with the subject: subscribe nautilus-users.