OWASP Amass vs ZoomEye: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
OWASP Amass is a free external attack surface management tool. ZoomEye is a free external attack surface management tool. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack.
CST VerdictBased on our analysis of available product data, here is our conclusion:
Security teams building external attack surface inventories on tight budgets should start with OWASP Amass; it maps networks and discovers assets using open-source intelligence faster than manual reconnaissance and costs nothing to deploy. The tool's 14,260 GitHub stars reflect sustained community validation across Fortune 500 deployments. Skip Amass if you need managed threat intelligence feeds, API integrations with your existing EASM platform, or hands-off automation; it requires manual tuning and operator skill to extract signal from the noise it generates.
Security teams conducting external attack surface discovery on a budget will get the most from ZoomEye; its free tier gives you real-time visibility into exposed assets and service versions across your internet-facing infrastructure without licensing friction. The search engine indexes over 600 million IP addresses and devices, letting you identify vulnerabilities before an attacker does. Skip this if you need continuous posture monitoring or remediation workflows; ZoomEye is a reconnaissance tool, not a management platform.
