Microsoft : SpeechAPI 4(0.9MB) Text-to-Speech Engines : Mary, Mike, Sam and More (7.3MB) American English (0.99MB) British English (2.54MB) Dutch(2.58MB) French(2.24MB) German(2.18MB) Italian(1.97MB) Japanese(3.00MB) Korean(3.03MB) Portuguese (2.39MB) Russian(2.85MB) Spanish (2.36MB) Elan Speech Engine Eloquent Technology ETI-Eloquence IBM ViaVoice Outloud AT&T Natural Voices