IBM ViaVoice (US English)
- Continuous speech recognition for your Mac.
- http://www.nuance.com/viavoice/osx/

Speech Technologies (Apple)
- Apple�s Speech Recognition and Speech Synthesis Technologies now give speech-savvy applications the power to carry out your voice commands, and even speak back to you in plain English, and now, Spanish.
- http://www.apple.com/macosx/features/speech/

Elan Speech
- Offers Elan Sayso natural sounding text-to-speech for Mac OS X. Available in 12 languages.
- http://www.elanspeech.com/

Speechissimo
- Converts any written text into speech using Elan Sayso text-to-speech technology. Speechissimo can speak multiple common languages. For Mac OS X.
- http://www.speechissimo.com/

MacSpeech
- Home of iListen, a Speech Dictation/Command software for Mac OS. Includes news releases, online store, and tech support.
- http://www.macspeech.com/