VXI* 4.4 / 5.0 will include a new TTS connector ready for eSpeak / MBROLA Text-to-Speech engine. Theses packages will be soon available with our last 5.0 release suite. You can also find more TTS Xtras* addons for Acapela, Loquendo, VoiceInteraction, Cepstral, Nuance, Flite (free), Verbio, Yantra Software,… ; stay tunned at our blog…
eSpeak / MBROLA is a free software like Flite and does text to speech synthesis for a large number of languages:
Afrikaans · Albanian · Armenian · Cantonese · Catalan · Croatian · Czech · Danish · Dutch · English · Esperanto · Finnish · French · German · Greek · Hindi · Hungarian · Icelandic · Indonesian · Italian · Kurdish · Latvian · Lojban · Macedonian · Mandarin · Norwegian · Polish · Portuguese · Romania · Russian · Serbian · Slovak · Spanish · Swahili · Swedish · Tamil · Turkish · Vietnamese · Welsh