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Screaming Frog SEO Spider vs SEOmator: catalog facts
Screaming Frog SEO Spider	SEOmator
Freemium Free for crawls up to 500 URLs; a licence costs £199 per year.	Freemium Offers more than 40 free SEO tools alongside paid platform features.
Windows, macOS, Linux	Web, Browser extension
Runs locally as a desktop app on all three major systems Checks over 300 issues including redirects and duplicates	Site crawling with on-page and technical issue reports More than 40 free SEO tools
Free version limited to 500 URLs Advanced features need a paid yearly licence	Full platform features require a paid plan Hosted service only, with no self-hosted option
Downloadable app	Web application, Hosted service, Browser extension
Closed 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 October 1, 2026

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