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WhatCMS vs Netcraft Site Report: catalog facts
WhatCMS	Netcraft Site Report
Free Checking a single URL on the website is free; reports and batch detection are separate…	Free Free to use under Netcraft's fair use policy.
Web	Web
Detects about 1,540 website technologies Reports framework, language, hosting and CDN alongside the CMS	Shows hosting, server and technology details in one report Includes hosting history and certificate details
Detection relies on visible artifacts and can miss customised sites Lead generation features go beyond simple site checks	Subject to a fair use policy Some features may not work in older browsers
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No 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.