The U.S. Web Design System helps the federal government build fast, accessible, mobile-friendly websites.

Web Experience Toolkit (WET): Open source code library for building innovative websites that are accessible, usable, interoperable, mobile-friendly and multilingual. This collaborative open source project is led by the Government of Canada.

a collection of functions that measure the readability of a given body of text

A repo to organize the guidelines and best practices for accessibility at 18f.

PHP variant of the Web Experience Toolkit (WET)

Interactive Guide to Assist Managing Web Accessibility Evaluations

A Visual Studio extension

WordPress variant for the Web Experience Toolkit (WET)

Accessibility testing in the browser and on the server.

HTML Custom Element / Widget infrastructure

React select component with a focus on accessibility

Web Accessibility Toolbar for Internet Explorer

continuous integration for website accessibility

Ruby on Rails variant of the Government of Canada Web Experience Toolkit

a11y testing plugin for Intern