Chordpro editor that can display, transpose and print song sheets.
Leadsheet notation with auto-generated playback, improvisation advice
Music score editor
ScoreDate is a software to learn music reading and ear training
a sheet music organiser
Print guitar chord diagrams
Quickly create, edit, and print guitar chord/scale fingering diagrams
JChords Guitar Chords and Tunings Library
Guitar helper for old computers: scales, chords, and much more