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Censys vs Amass: catalog facts
Censys	Amass
Freemium Free basic search with paid plans for the full platform.	Free The software is free under its open-source licence. Hosting, hardware and external…
Web	Windows, macOS, Linux, Command line
Searchable map of hosts, services and TLS certificates Attack surface and adversary investigation tooling	It combines passive open-source intelligence with active reconnaissance and stores the results in a graph database you…
Full platform is enterprise-focused with paid plans Account required to use search	Active reconnaissance touches the target directly, so it must only be pointed at systems you are authorised to…
Hosted service	Downloadable app
Closed source	Open source
License not stated	License: Apache-2.0
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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