Compare software

Netpeak SpiderSiteOne Crawler
Paid

Commercial software with a free trial.

 Free

Free and open source.

Windows, macOS Windows, macOS, Linux, Command line
  • Dedicated crawler for technical SEO audits
  • Runs as a desktop application
  • Broad audit covering SEO, security, accessibility and performance
  • Both a desktop GUI and a scriptable CLI
  • Paid after the trial
  • Closed source
  • The large number of CLI options takes time to learn
  • Crawling large sites can put load on the target server
Downloadable app 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.