Speech to Text Platforms

AT&T
http://developer.att.com/developer/apiDetailPage.jsp?passedItemId=10700023
An example of this in use: http://www.zukinimobile.com/speech

Google
http://code.google.com/chrome/extensions/experimental.speechInput.html

iSpeech
https://www.ispeech.org/developers

OneTok
http://onetok.com