Components

an accessibility (a11y) visualization toolkit

This CSS file intends to warn developers about possible risks and mistakes that exist in HTML code. It can also be used to roughly evaluate a site's quality by simply including it as an external stylesheet.

Identifies accessibility issues in your React.js elements

Color utilities for macOS, iOS, tvOS, and watchOS

Ace by DAISY, an Accessibility Checker for EPUB

CSS Accessibility Validator for your HTML

Calculate the WCAG contrast ratio between 2 colors.

Fractal component library tool (http://fractal.build) plugin for accessibility testing against Tenon (http://tenon.io)

EIII accessibility testing bookmarklet