List of speech recognition software

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Open source acoustic models and speech corpus[edit]

The following list presents notable speech recognition software with a brief synopsis of characteristics.

Application name Description Website Open Source License Operating System Note
CMU Sphinx CMU: Sourceforge Yes Linux
Julius Juilus Sourceforge license Yes
Kaldi Kalidi Sourceforge Yes Apache
simon Simon Yes
VoxForge Yes GPL


Application name Description Website Open Source License Price Note
Dragon Dictate Mac OS Yes Proprietary
MacSpeech Dictate Medical Medical dic product
Macspeech Dictate Legal Legal-focused dictation
Macspeech Scribe Transcription from recorded text
iListen PowerPC Macintosh
Speakable items Included with Mac OS
ViaVoice IBM Product. Supported ended 2007.
Voice Navigator Original GUI voice control (1989)
Power Secretary[1]

Mobile Devices / Smartphones[edit]

Many cell phone handsets have basic dial-by-voice features built in. Smartphones such as iPhone or Blackberry also support this. A number of 3rd party Apps have implemented natural language speech recognition support, including: