MuseScore.org - Create, play back and print beautiful sheet music with free and easy to use music notation software MuseScore. For Windows, Mac and Linux.
ChordU - Extracts chords from any song, integrated YouTube.
Guitar Pro 7 - Create, play and share your tabs
Guitaa.com - Turn ANY song into chords, play along with interactive chords and diagram, transpose, loop, tempo control.
Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.
Chordify - Chordify turns any music or song (YouTube, Deezer, SoundCloud, MP3) into chords.