Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Stave'n'Tabs - iOS and macOS notation and tablature editor with MIDI and MusicXML files support and chromatic...
MMA - “MMA—Musical MIDI Accompaniment” is an accompaniment generator.
Aria Maestosa - Aria Maestosa is an open-source (GPL) midi tracker/editor.
ChordPulse - ChordPulse is interactive software that’s designed to help you learn music on your instrument.
Tonelib JAM - Create, edit, print and listen to tablature and guitar sheet music