oTranscribe - A free web app to take the pain out of transcribing recorded media
X-Minus.pro - X-Minus.pro is an artificial intelligence-based tool that allows you to separate vocals from a song.
Listen N Write - Listen N Write can be used to play and transcribe ordinary audio and video recordings (WAV, MP3...
VocalRemover.org - Vocal Remover and Isolation. Separate voice from music out of a song free with powerful AI algorithms
Sonix - Automatically convert audio & video to text in minutes
KBIC Vocal Remover - Fast, simple voice removal online