aDesigner is a disability simulator that helps designers ensure that their content and applications are accessible and usable by the visually impaired.

Robust, efficient and accurate accessibility testing tools for all Built on the world’s most popular accessibility testing library, axe-core. Deque’s suite of axe tools offers full coverage for your testing and compliance needs.

Use TPGi's free colour contrast checker to optimize your content - including text and visual elements - for individuals with color-blindness or low vision impairments.

A tool for making custom branded color palettes for web and UI design that are built from the ground up to meet WCAG contrast accessibility guidelines

Colour contrast checker to check for accessibility issues.

Free and open source. Solve accessibility issues before they reach your customers.