Compare software

Total ValidatorSortSite
Freemium

A Basic edition is offered alongside paid Pro and CI editions.

 Freemium

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

Browser extension Web
  • Accessibility tests for WCAG 2.2, Section 508 and ARIA
  • HTML, CSS, link and spelling checks in one tool
  • Accessibility, links, compatibility and SEO in one scan
  • Over 1200 checkpoints
  • Advanced features are split across paid editions
  • Supported operating systems are not stated on the homepage
  • Free demo covers only the first 10 pages
  • Full site scans require a paid product
Downloadable app, Browser extension Downloadable app, Web application
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

Checked October 2, 2026

Checked September 23, 2026

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