I've tested c2 voice recognition. It is even better than the builtin voice recognition from my operating system. But it does have a flaw: the user has to use the right browser for it to work.
I suggest making:
a) A list of browsers with speech recognition
Chrome 31/Windows XP => ok
Opera 19/Win XP => Fail
Explorer 8/Win XP =>C2 not supported
b) A list of browsers with speech synthesis
Chrome 31/Windows XP =>Fail
Chrome latest / Windows 7 => Fail
Opera 19 / Win XP => Fail.
Explorer 8/ WinXP => C2 not supported
Did anyone heard about a browser supporting speech synthesis?