Compare software

SortSiteSiteOne Crawler
Freemium

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

 Free

Free and open source.

Web Windows, macOS, Linux, Command line
  • Accessibility, links, compatibility and SEO in one scan
  • Over 1200 checkpoints
  • Broad audit covering SEO, security, accessibility and performance
  • Both a desktop GUI and a scriptable CLI
  • Free demo covers only the first 10 pages
  • Full site scans require a paid product
  • The large number of CLI options takes time to learn
  • Crawling large sites can put load on the target server
Downloadable app, Web application 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.