Guitaa is a free online music platform for musicians, that lets them find chords of any song of their choice on Guitar, Piano and Ukulele.
App:
Perfect app for musicians
ChordIQ - Learn notes, chords, sight reading, perfect pitch and more.
ChordU - Extracts chords from any song, integrated YouTube.
muted.io - A magical collection of interactive music theory tools & visual reference pages for musicians and music producers
Chordify - Chordify turns any music or song (YouTube, Deezer, SoundCloud, MP3) into chords.
yalp.io - Automatic chords extraction from mp3 and YouTube
ChordPic - Create beautiful guitar chord diagrams