Alternatives to IBM Equal Access Accessibility Checker
IBM's open-source browser extension and toolkit for automated accessibility checks of web pages. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
IBM Equal Access Accessibility Checker
IBM's open-source browser extension and toolkit for automated accessibility checks of web pages.
Replacements
Listings that take over the same core job as IBM Equal Access Accessibility Checker.
axe DevTools
Accessibility testing tools and browser extension from Deque, built on the axe-core rules engine.
axe DevTools uses Deque's axe-core engine with IDE, CI and mobile toolkits, but is closed source and advanced features are enterprise products sold through sales.
Accessibility Insights
Microsoft's open-source tools for finding and fixing accessibility problems in web pages and Windows apps.
Accessibility Insights is Microsoft's open-source toolset with guided WCAG 2.1 AA assessment and Windows app testing, but its web extension targets Chrome and Edge only.
WAVE
A suite of web accessibility evaluation tools, available online and as browser extensions.
WAVE shows issues in place on the page through extensions for Chrome, Firefox and Edge, while bulk and CI testing need its paid API or engine.
Pa11y
Open-source command-line and dashboard tools that test web pages for accessibility issues automatically.
Pa11y is open source with command-line and CI tools and a self-hosted dashboard that tracks results over time, requiring your own server for the dashboard.
ARC Toolkit
Browser extension from TPGi that finds accessibility issues on individual web pages.
ARC Toolkit is a free TPGi browser extension using the ARC rules engine on one page at a time, without build or CI integrations.
webhint
A customizable linting tool that checks websites for accessibility, speed, compatibility and security problems.
webhint is an open-source linter covering accessibility plus speed, compatibility and security, available in the browser, editor and CI and built into Edge DevTools.
Tanaguru Engine
An automated accessibility testing engine that checks websites and web applications against RGAA and WCAG.
Tanaguru Engine is self-hosted and automates about 380 tests against RGAA and WCAG across whole sites, though licence details are unclear and its page is mainly French.
Also worth comparing
These listings name IBM Equal Access Accessibility Checker as their own alternative, so the relationship runs both ways.
ANDI
Free bookmarklet from the US Social Security Administration for testing web pages for accessibility.
IBM Equal Access Accessibility Checker is an open-source browser extension that shares its rule engine with CI integrations for Cypress, Karma, Vitest and Java.
Sa11y
Accessibility checker that highlights content issues directly on a web page with tips for fixing them.
IBM Equal Access Accessibility Checker is an open-source browser extension with CI integrations, aimed at web teams rather than content editors.
Stark
A suite of accessibility tools for checking and fixing issues across design and development.
IBM Equal Access Accessibility Checker is open source and uses the same rule engine in the browser and in builds, with Cypress, Karma, Vitest and Java integrations.
Similar software
Related functionality, not a direct replacement.
Colour Contrast Analyser
A free desktop app for checking foreground and background color contrast against WCAG, with eyedropper pickers.
Asqatasun
Open-source, self-hosted engine that audits web pages and whole sites for accessibility and SEO.
Lighthouse CI
A set of tools that runs Lighthouse audits on every commit and tracks results over time.
WebAIM Contrast Checker
An online checker that tests foreground and background color contrast against WCAG AA and AAA levels.