censys-subdomain-finder vs Shodan: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros and cons, compared head to head.
censys-subdomain-finder is a free external attack surface management tool. Shodan 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. Independent and vendor-neutral: our scores and rankings are earned, never bought — sponsored placement is always labeled.
CST VerdictBased on our analysis of available product data, here is our conclusion:
Security teams responsible for internet-facing infrastructure need Shodan to find what attackers see before attackers do. The free tier gives you real-time visibility into your own exposed devices, services, and default credentials across millions of internet scans without licensing friction. Skip this if your organization lacks the operational discipline to act on what you find; Shodan surfaces problems faster than most teams can remediate them, which creates noise without a triage process in place.
Data verified Sep 2026
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