Deepgram - Search engine for speech
One Hour Translation - Professional translation services for 75 languages on a 24/7 basis.
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.
Rev.com - Transcriptions, captions, and subtitles that are affordable, fast, and high-quality.
Cassette - Transcribe, record & share conversations
Lilt - A Twitter text adventure