Speech synthesis is the artificial production of human speech. A computer system used for this purpose is called a speech synthesizer, and can be implemented in software or hardware. A text-to-speech (TTS) system converts normal language text into speech; other systems render symbolic linguistic representations like phonetic transcriptions into speech.

Supported engines are:

• Acapela
• Cepstral
• Flite (FREE)
• eSpeak / MBROLA (FREE)
• Loquendo
• Nuance
• Verbio
• Voiceinteraction
• Yantra Software

Please contact us, for other speech engines requirements:

Product: Acapela TTS Telecom
Vendor: Acapela Group, Belgium
Web: www.acapela-group.com

Languages:
Arabic · Czech · Danish · Dutch (BE, NL) · English (UK, US) · Faeroese · Finnish · French (FR, Canadian) · German · Greek · Icelandic · Italian · Norwegian · Polish · Portuguese (PT, Brazil) · Russian · Spanish (ES, North America) · Swedish · Turkish

Product: Cepstral TTS
Vendor: Acapela Group, US
Web: www.cepstral.com

Languages:
English (UK, US) · French (Canadian) · German · Italian · Spanish (North America)

Product: eSpeak | MBROLA
Vendor: eSpeak – MBROLA (FREE)
Web: espeak.sourceforge.net | MBROLA

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

Product: Loquendo TTS for Linux
Vendor: Loquendo, Italia
Web: www.loquendo.com

Languages:
Arabic · Czech · Danish · Dutch (BE, NL) · English (UK, US) · Finnish , French(FR, Canadian) · German · Greek, Italian · Norwegian · Polish · Portuguese (PT, Brazil) · Russian · Spanish (Castillan ES) · Spanish (North America) · Spanish (Catalan) · Spanish (Galician) · Swedish · Turkish · Chinese

Product: Festival Lite (Flite)
Vendor: Speech CMU | LTI (FREE)
Web: http://www.speech.cs.cmu.edu/flite/doc/index.html

Languages:
English (US)

Product: Nuance TTS for Linux
Vendor: Nuance, US
Web: www.nuance.com

Languages:
Spanish (Basque) · Spanish (Catalan) · Chinese (Cantonese)  · Chinese (Mandarin) · Chinese (Taiwan) · Czech (Czech) · Danish · Dutch(BE, NL) · English (Australian) · English (UK) · English (Indian) · English (Irish) · English (Scottish) · English (South African) · English (US) · Finnish · French · French (Canadian) · German · Greek · Hindi · Italian · Japanese · Korean · Norwegian · Polish · Portuguese · Portuguese (Brazilian) · Russian · Spanish (Castillan) · Spanish (Americas) · Swedish ·  Thai · Turkish

Product: Verbio ASR
Vendor: Verbio, Spain
Web: www.verbio.com

Languages:
English (US) · French · German · Italian · Portuguese · Portuguese (Brazil) · Spanish(Argentina) · Spanish (Chile) · Spanish (Venezuela) · Spanish (Colombia) · Spanish (Cuba) · Spanish (Santo Domingo) · Spanish (Puerto Rico) · Spanish (Paraguay) · Spanish (Uruguay) · Spanish(Mexico) · Spanish (North America) · Spanish (Catalan) · Spanish (Valencia) · Spanish (Galician) · Spanish (Euskera)

Product: Dixi TTS
Vendor: VoiceInteraction, Portugal
Web: www.voiceinteraction.pt

Languages:
English (US) · Spanish · Portuguese · Portuguese (Brazil)

Product: ASLT TTS
Vendor: Yantra Software, India
Web: www.yantrasoftware.com

Languages:
English (UK) · Indi · Telegu · Kannada · Tamil