Certbot vs Nuclei

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.

Nuclei is Fast, template-based vulnerability scanner driven by a community-maintained library of detection templates.. It is available under a free model. This tool falls under the security category.