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BuiltWith vs HackerTarget WhatWeb Scan: catalog facts
BuiltWith	HackerTarget WhatWeb Scan
Freemium Free single-site lookups with paid plans for reports and bulk data.	Freemium Free analysis reports are offered, with paid plans for more scanning.
Web, Browser extension	Web
Identifies CMS, analytics, CDN and hosting from a single domain Free lookups for individual sites	Runs WhatWeb and Wappalyzer without a local install Detects applications, web servers and other technologies
Detailed reports and bulk data require paid plans Detection is inference-based and can miss or misreport technologies	Intended for authorized testing of sites you own or may assess Heavier use sits behind paid plans
Hosted service, Browser extension	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.