Meludia - Listening exercises and to sharpen your ear and music theory skills
oTranscribe - A free web app to take the pain out of transcribing recorded media
GNU Solfege - GNU Solfege is free music education software.
Listen N Write - Listen N Write can be used to play and transcribe ordinary audio and video recordings (WAV, MP3...
Auricula - Practice your sense of hearing and learn to identify intervals for your musical development.
Sonix - Automatically convert audio & video to text in minutes