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Censys vs CertGraph: catalog facts
Censys	CertGraph
Freemium Free basic search with paid plans for the full platform.	Free Free and open source under the GPL-2.0-or-later license.
Web	Windows, macOS, Linux, Web, Command line
Searchable map of hosts, services and TLS certificates Attack surface and adversary investigation tooling	Builds a graph from certificate alternative names Supports HTTPS and SMTP certificate collection
Full platform is enterprise-focused with paid plans Account required to use search	The Censys driver requires API keys.
Hosted service	Downloadable app, Web application
Closed source	Open source
License not stated	License: GPL-2.0-or-later
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 October 8, 2026

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