Acoustica - Acoustica is an audio editing tool for editing, mastering and restoration work on both Mac and PC.
Audext - Use online audio to text converter to transcribe any voice recording in minutes.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Sonix - Automatically convert audio & video to text in minutes
Magix SpectraLayers - SpectraLayers Pro transforms sound into a unique visual world of multidimensional audio data.
HappyScribe - Happy Scribe automatically transcribes your interviews