Compare software

SiteOne CrawlerSortSite
Free

Free and open source.

 Freemium

The online demo is free for 10 pages; SortSite Desktop and OnDemand are paid.

Windows, macOS, Linux, Command line Web
  • Broad audit covering SEO, security, accessibility and performance
  • Both a desktop GUI and a scriptable CLI
  • Accessibility, links, compatibility and SEO in one scan
  • Over 1200 checkpoints
  • The large number of CLI options takes time to learn
  • Crawling large sites can put load on the target server
  • Free demo covers only the first 10 pages
  • Full site scans require a paid product
Downloadable app Downloadable app, Web application
Open source Closed source
License not stated License not stated
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 24, 2026

Checked September 23, 2026

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