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Netpeak Spider vs Sitechecker: catalog facts
Netpeak Spider	Sitechecker
Paid Commercial software with a free trial.	Freemium The single-page SEO checker is free; crawling, monitoring and rank tracking are paid…
Windows, macOS	Web, Browser extension
Dedicated crawler for technical SEO audits Runs as a desktop application	Free page audit with a score, status code and indexation status Crawler, monitoring and rank tracking in the same platform
Paid after the trial Closed source	Most features beyond the single-page checker are paid Aimed at marketers, so reports focus on SEO rather than general site health
Downloadable app	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is 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 September 23, 2026

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