Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication. It has audits for performance, accessibility, progressive web apps, SEO and more.
webhint is a linting tool that will help you with your site's accessibility, speed, security and more, by checking your code for best practices and common errors. Use the online scanner or the CLI to start checking your site for errors.
A collection of accessible, modern front-end components.
Frend components are modest and dependency-free. They are built with web standards as a priority and aim to avoid assumptions about tooling or environment. Care has been taken to make sure each component is compliant, keyboard navigable and properly interpreted by assistive technologies.
Monitor the accessibility of your websites with pa11y-dashboard, and protect against accessibility errors creeping into your codebase.
Automated tool to find Accessibility defects on your web site by using the aXe Chrome extension. Drop the aXe on your accessibility defects! We believe that automated testing has an important role to play in achieving digital equality and that in order to do that, it must achieve mainstream adoption by professional web developers. That means that the tests must inspire trust, must be fast, must work everywhere and must be available everywhere.
Accessibility audit and element properties.
This extension will add an Accessibility audit, and an Accessibility sidebar pane in the Elements tab, to your Chrome Developer Tools.
Able Player is a fully accessible cross-browser media player. It uses the HTML5 <audio> or <video> element for browsers that support them, and (optionally) the JW Player as a fallback for those that don’t.
Diagnostic.css is a stylesheet which allows the user to test for common errors in a page's markup.
an accessibility visualization toolkit that aims to reduce the friction of a11y testing
LeanBack Player is a Javascript based HTML5 Video and Audio Media Player UI that uses build-in HTML5 <video> and <audio> element functionality of standard browsers, platforms and devices. It's very easy to integrate, it's skinnable by using CSS, it's independent of any other javascript libraries, it's adaptable by using extensions and it's free for non-commercial use.
EnhanceJS is a new Javascript framework designed to improve the application of Progressive Enhancement by first testing browser capabilities for key Javascript and CSS support before applying advanced styles and scripts to the page.
The mobiReady testing tool evaluates mobile-readiness using industry best practices & standards.
A Screen Reading Extension for Firefox
NVDA software enables blind and vision impaired people to use a computer by communicating what is on the screen using a synthetic voice or braille.
NVDA (NonVisual Desktop Access) is the only screen reader for Microsoft Windows that is totally free, yet fully functional and portable. You can download it to your PC, or to portable media such as a USB stick which you can use with any computer at school, work – anywhere!
This article is for those who are new to ARIA. You need an understanding of HTML and the potential difficulties that people with disabilities can face using the Web. It is useful to be familiar with some Rich Internet Applications from a user's perspective.