Voice
Input (Speech to Text)
Dragon Naturally Speaking (voice dictation)
http://nuance.com/naturallyspeaking/
ViaVoice
http://www.nuance.com/viavoice/osx/
MacSpeech
http://www.macspeech.com/
SpeakQ
http://www.wordq.com/
The
Acoustic Magic Voice Tracker:
http://www.sforh.com/speech/voicetrack-microphone.html
Speech Mike Pro:
http://www.sforh.com/speech/philips-microphone.html
Phone Dialer Voice activated phone
http://www.sforh.com/speech/vocally-phone.html
Headsets:
http://www.sforh.com/headsets/voice-recog.html