Wikipedia
Acapela
Acapela Group is a company which develops text-to-speech software and services. It was formed in December 2003 from a combination of three European companies specializing in vocal technologies, Babel Technologies (Belgium), Infovox (Sweden) and Elan Speech (France).
Today, Acapela provides text-to-speech capabilities for languages including Arabic, French, Czech, Danish, Dutch, English, Finnish, German, Italian, Greek, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish and Turkish.