Compare software

CheckbotSiteOne Crawler
Freemium

Free to install, with Checkbot Pro from $10 per month.

 Free

Free and open source.

Browser extension Windows, macOS, Linux, Command line
  • Crawls hundreds of pages at once
  • More than 50 SEO, speed and security checks
  • Broad audit covering SEO, security, accessibility and performance
  • Both a desktop GUI and a scriptable CLI
  • Chrome only
  • Some features require a paid plan
  • The large number of CLI options takes time to learn
  • Crawling large sites can put load on the target server
Browser extension Downloadable app
Closed source Open source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 24, 2026

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