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Semrush Site Audit vs Sitechecker Website Monitoring: catalog facts
Semrush Site Audit	Sitechecker Website Monitoring
Freemium A limited free crawl is available; larger audits require a paid Semrush plan.	Paid Paid platform with a free way to start and some free SEO tools.
Web	Web, Browser extension
Issues ranked by severity with fix suggestions Covers AI search visibility as well as classic SEO	Alerts on changes to robots.txt, sitemaps and meta tags Detects broken links and redirects
The free crawl is limited Full use requires a paid Semrush subscription	Focused on SEO rather than uptime Full monitoring requires a paid plan
Web application	Hosted service, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Needs internet	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.