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Siteliner vs Screaming Frog SEO Spider: catalog facts
Siteliner	Screaming Frog SEO Spider
Free Free scans are available from the website; account sign-up is optional.	Freemium Free for crawls up to 500 URLs; a licence costs £199 per year.
Web	Windows, macOS, Linux
Finds duplicate content within a site Reports broken links and redirections in the same scan	Runs locally as a desktop app on all three major systems Checks over 300 issues including redirects and duplicates
Web service only, so the site must be publicly reachable Focuses on content and links rather than speed or accessibility	Free version limited to 500 URLs Advanced features need a paid yearly licence
Web application	Downloadable app
Closed source	Closed 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 24, 2026	Official website Full listing and sources Checked September 23, 2026

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