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Checkbot vs Sitebulb: catalog facts
Checkbot	Sitebulb
Freemium Free to install, with Checkbot Pro from $10 per month.	Paid Paid subscription with a free trial.
Browser extension	Web
Crawls hundreds of pages at once More than 50 SEO, speed and security checks	Prioritised hints with built-in explanations JavaScript crawling included
Chrome only Some features require a paid plan	Paid after the trial Desktop crawls capped at 500,000 URLs per audit
Browser extension	Downloadable app, Hosted service
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	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.