Deepgram - Search engine for speech
VoiceAttack - VoiceAttack will take commands that you speak into your microphone
Hidden Markov Model Toolkit - Hidden Markov Model Toolkit (HTK) is a portable toolkit used for speech recognition research, speech synthesis, character recognition and DNA sequencing.
VoiceMacro - Control applications or games by voice commands and/or by the press of a keyboard, mouse button or...
Cassette - Transcribe, record & share conversations
SpeechTurtle - SpeechTurtle is a voice recognition tool that has a simplified c# scripting interface.