Framework-specific

Use HTML codesniffer to grade accessibility

Google Chrome extension that increases readability for people with dyslexia

W3C Web Speech API - Speech Recognition plugin for PhoneGap

This is a library of accessibility-related testing and utility code.

HTML Custom Element / Widget infrastructure

A tiny, fully accessible tab switcher for jQuery.

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

an open-source, cross-platform toolbox for minimal-effort programming of eye tracking experiments

flagging accessibility concerns

Working together to fix accessibility on the Web, one site at a time.