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Software Applications

Some software applications, either installed separately or built-in utilities that come with the operation system, can be used to test the accessibility of web pages and software applications.

Windows

Accessibility Insights for Windows
Accessibility Insights for Windows helps developers find and fix accessibility issues in Windows apps.
Colour Contrast Analyzer (CCA) Tool
The Colour Contrast Analyser helps you determine the legibility of text and the contrast of visual elements, such as graphical controls and visual indicators.

MacOS

Accessibility Inspector
Apple provides the Accessibility Inspector testing tool that can be launched by choosing Xcode > Open Developer Tool > Accessibility Inspector in the menu bar or Dock. You can download Xcode from the Mac App Store for free. The Accessibility Inspector presents a utility window that displays the information properties (and values), action methods, and position in the accessibility hierarchy of the object currently under the mouse pointer.

Cross-platform

Accessibility Insights for Android
Accessibility Insights for Android is a free, open source tool that helps developers find and fix accessibility issues in Android apps. The tool runs on Windows, Mac, and Linux. You can test apps on a hardware device or on an Android Virtual Device.
Koa11y
Koa11y is a desktop app that allows you to automatically detect accessibility (a11y) issues on webpages.

Android

Accessibility Scanner
The Accessibility Scanner app scans your screen and provides suggestions to improve the accessibility of your app. Accessibility Scanner uses the Accessibility Test Framework and provides specific suggestions after looking at content labels, clickable items, contrast, and more.