ally.js
bbc/bbc-a11y: BBC Accessibility Guidelines Checker
CSS and JavaScript accessibility best practices - Learn web development | MDN
dequelabs/axe-core: Accessibility engine for automated Web UI testing
guidepup/guidepup: Screen reader driver for test automation.
Orange-OpenSource/a11ygato-platform: a11ygato is a suite of tools to help audit web site accessibility. A score (KPI) is computed per audit. This project is a fork of pa11y
prettydiff/a11y-tools: JS Accessibility Tool List
Progressively Enhanced Form Validation, Part 2: Layering in JavaScript
In Part 2 of this series, we take the base HTML and CSS form validation experience and progressively enhance it by adding JavaScript and the Constraint Validation API while also addressing accessibility concerns.
WebAIM: Accessible JavaScript - Overview of Accessible JavaScript