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Censys vs Shodan: catalog facts
Censys	Shodan
Freemium Free basic search with paid plans for the full platform.	Freemium Free searches with a paid membership and API tiers for wider access.
Web	Web, Browser extension
Searchable map of hosts, services and TLS certificates Attack surface and adversary investigation tooling	Searchable index of exposed devices and services worldwide Monitor feature alerts on changes to your own IP ranges
Full platform is enterprise-focused with paid plans Account required to use search	Most useful features require a paid membership Account required for meaningful searches
Hosted service	Hosted service, Browser extension
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.