Fallimento Assicurato ("a sure failure") is an OSR RPG zine, in Italian. Each issue (they are published as they are ready, not on fixed times) has a different theme. You can find us on DriveThruRPG.
Cripte e Codici ("Crypts and Codes") is a system-agnostic guide to cryptography for Game Masters. It contains a list of historical ciphers, exposed in layman terms and adventure ideas based on cryptography. It's written in Italian using LaTeX and is fully open source. You can find it on GitLab.