Speech Tools/Toolkits
Java Speech SDK
FreeTTS http://freetts.sourceforge.net
"For 3/4 or 75% of his time, Dr. Walker practices for $90 a visit on Dr. Dr., next to King Philip X of St.
Lameer St. in Nashua NH."
Nuance
Loquendo TTS / ASR (the best, right now)
Cepstral TTS
Microsoft Speech API/SDK
Visual/Real Basic speech SDK
OS capabilities (speech recognition and
synthesis built in to OS) (VoiceOver, etc.)