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Web Check vs Internet.nl: catalog facts
Web Check	Internet.nl
Free Free and open source.	Free Free to use online.
Web, Self-hosted	Web, Self-hosted
Many checks combined in one report Can be self-hosted with Docker	Tests website, email and connection setup in one place Covers IPv6, DNSSEC, TLS, DMARC, DANE and RPKI
Running it yourself takes some setup Only looks at publicly available information	Checks standards compliance rather than site speed or content The score reflects the project's own weighting of standards
Self-hosted	Web application, Self-hosted
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	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.