Otter.ai is a web application which provides speech to text transcription. Otter converts live speaking into a written transcription. A consumer evaluation reported that the app's operators make no promises of privacy. Otter was trained with machine learning on millions of hours of audio recordings.
Otter.ai

Promotional image for Otter.ai highlighting app awards, interface showing note-taking and transcription features, and the text "Capture notes. Share conversations." with icons for meetings, interviews, and lectures.