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Screaming Frog SEO Spider vs Netpeak Spider: catalog facts
Screaming Frog SEO Spider	Netpeak Spider
Freemium Free for crawls up to 500 URLs; a licence costs £199 per year.	Paid Commercial software with a free trial.
Windows, macOS, Linux	Windows, macOS
Runs locally as a desktop app on all three major systems Checks over 300 issues including redirects and duplicates	Dedicated crawler for technical SEO audits Runs as a desktop application
Free version limited to 500 URLs Advanced features need a paid yearly licence	Paid after the trial Closed source
Downloadable app	Downloadable app
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	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.