Rapid7 Nexpose VS ZoomEye

Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.

Shodan - Shodan is the world's first search engine for Internet-connected devices.

Horangi - Horangi is a leading cyber-security solution that provides instant response and threat detection for companies who lack the time and expertise to monitor their system.

Censys - Censys helps organizations, individuals, and researchers find and monitor every server on the Internet to reduce exposure and improve security.

Rapid7 MetaSploit - Penetration testing solution for risk validation.

Exploit Pack - Exploit Pack is an open source project security that will help you adapt exploit codes on-the-fly.