KatrielMoses / MailAccess

Free email OSINT tool, 5000+ platforms, identity clustering, breach detection. No API keys required. pip install mailaccess

MISP / MISP

MISP (core software) - Open Source Threat Intelligence and Sharing Platform

cowrie / cowrie

Cowrie SSH/Telnet Honeypot https://docs.cowrie.org/

utmstack / UTMStack

Enterprise-ready SIEM, SOAR and Compliance powered by real-time correlation and threat intelligence.