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Netpeak Spider vs Semrush Site Audit: catalog facts
Netpeak Spider	Semrush Site Audit
Paid Commercial software with a free trial.	Freemium A limited free crawl is available; larger audits require a paid Semrush plan.
Windows, macOS	Web
Dedicated crawler for technical SEO audits Runs as a desktop application	Issues ranked by severity with fix suggestions Covers AI search visibility as well as classic SEO
Paid after the trial Closed source	The free crawl is limited Full use requires a paid Semrush subscription
Downloadable app	Web application
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.