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SortSite vs Screaming Frog SEO Spider: catalog facts
SortSite	Screaming Frog SEO Spider
Freemium The online demo is free for 10 pages; SortSite Desktop and OnDemand are paid.	Freemium Free for crawls up to 500 URLs; a licence costs £199 per year.
Web	Windows, macOS, Linux
Accessibility, links, compatibility and SEO in one scan Over 1200 checkpoints	Runs locally as a desktop app on all three major systems Checks over 300 issues including redirects and duplicates
Free demo covers only the first 10 pages Full site scans require a paid product	Free version limited to 500 URLs Advanced features need a paid yearly licence
Downloadable app, Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	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.