Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Guitar Pro 7 - Create, play and share your tabs
NtEd - Music Score Notation editor.
Synfire - The comprehensive Music Prototyping Studio for professionals and enthusiasts.
ScoreCloud - ScoreCloud, free software that instantly turns your songs into sheet music. As simple as that!
MMA - “MMA—Musical MIDI Accompaniment” is an accompaniment generator.