ChordU - Extracts chords from any song, integrated YouTube.
X-Minus.pro - X-Minus.pro is an artificial intelligence-based tool that allows you to separate vocals from a song.
Guitaa.com - Turn ANY song into chords, play along with interactive chords and diagram, transpose, loop, tempo control.
VocalRemover.org - Vocal Remover and Isolation. Separate voice from music out of a song free with powerful AI algorithms
Chordify - Chordify turns any music or song (YouTube, Deezer, SoundCloud, MP3) into chords.
KBIC Vocal Remover - Fast, simple voice removal online