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Netcraft Site Report vs Web Check: catalog facts
Netcraft Site Report	Web Check
Free Free to use under Netcraft's fair use policy.	Free Free and open source.
Web	Web, Self-hosted
Shows hosting, server and technology details in one report Includes hosting history and certificate details	Many checks combined in one report Can be self-hosted with Docker
Subject to a fair use policy Some features may not work in older browsers	Running it yourself takes some setup Only looks at publicly available information
Web application	Self-hosted
Closed source	Open source
License not stated	License not stated
No account needed	No account 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 23, 2026

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