age vs Certbot

age is an open-source file encryption tool and library designed as a modern replacement for GPG. It uses X25519, ChaChaPoly, and HMAC-SHA256 as cryptographic primitives with a simple command-line interface. The tool supports encryption to multiple recipients, SSH key-based encryption, and passphrase-based encryption.

Certbot is an open-source tool by the Electronic Frontier Foundation (EFF) for automatically obtaining and renewing free SSL/TLS certificates from Let's Encrypt. It integrates with web servers like Apache and Nginx for automated certificate installation.