Voibro is a voice browser extension which allows to browse through websites with your voice.After installation you can activate voibro by pressing the keys 'v' and 'b' simultaneously.
Consider visiting the following tutorial to learn the commands of voibro:
https://dl.dropboxusercontent.com/u/14100215/tutorial-en.html
Hint: To use voibro the permission to use the microphone has to be granted. Sites hosted over HTTPS need that permission only once.