Weston Ruter

Make your browser speak when <code>wp.a11y.speak()</code> is called. Requires a browser that <a href="http://caniuse.com/#feat=speech-synthesis" rel="nofollow ugc">supports <code>speechSynthesis</code></a> (which all currently do except for IE11).
This is useful for development to simulate what a user experiences when using a screen reader.

Accessibility (a11y) Speech Synthesis

Make your browser speak when wp.a11y.speak() is called.

Olar Marius

Javascript tool for transforming the text into speech.
Based on eSpeak code made by Jonathan Duddington.
Relevant links: 
http://en.wikipedia.org/wiki/ESpeak 
http://espeak.sourceforge.net/ 
http://sourceforge.net/users/jonsd 
http://jonathan-duddington.mac.informer.com/

Text to Speech

Javascript tool for transforming the text into speech.

Accessibility (a11y) Speech Synthesis vs Text to Speech