A free program for Mac, by Transcriber.

Transcriber is a speech transcription tool, which is capable of converting speech recordings into text.

The speech recordings to be transcribed can be acquired from a variety of news and speech recordings. The speech transcriber will first transcribe your audio using a speech recognition engine. The transcription will be displayed in text format.

Transcriber has a graphical user interface. This is useful to quickly see the progress of the transcription process and to listen to the audio.