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AChecker vs SortSite: catalog facts
AChecker	SortSite
Free Single checks are free; automatic monitoring is a paid ACHECKS subscription.	Freemium The online demo is free for 10 pages; SortSite Desktop and OnDemand are paid.
Web	Web
Checks by URL, file upload or pasted HTML Choice of several guideline sets and levels	Accessibility, links, compatibility and SEO in one scan Over 1200 checkpoints
Guidelines stop at WCAG 2.0 Older interface with limited explanation of fixes	Free demo covers only the first 10 pages Full site scans require a paid product
Web application	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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