[DEPRECATED] Accessibility auditing for React.js applications

A Visual Studio extension

A lightweight pipeline, locally or in Lambda, for scanning things like HTTPS, third party service use, and web accessibility.

Automated testing for HTML5Accessibility.com

Accessibility testing in the browser and on the server.

Web Accessibility Toolbar for Internet Explorer

Continuous accessibility testing, with HTML and JUnit reports

A free tool for analyzing web content to determine if it might cause seizures in those who have photosensitive seizure disorders such as epilepsy. 

a11y testing plugin for Intern