Deepgram - Search engine for speech
Speechmatics - The most accurate and inclusive speech-to-text API ever released.
Cassette - Transcribe, record & share conversations
Lilyspeech - Press Ctrl+D to instantly start typing with your voice anywhere on your Windows Desktop or Laptop.
Jasper - Jasper is an open source platform for developing always-on, voice-controlled applications.
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.