Abundant Music - Generate royalty free music with a simple but very powerful procedural music creator
NtEd - Music Score Notation editor.
AIVA - The AI composing emotional soundtrack music
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Noatikl - Noatikl, our evolution of SSEYO Koan, is a deep & powerful app for generative MIDI music composition AND sound design. Wotja is now the future for Noatikl. Software for Windows 10
music21 - Music21 is a Python-based toolkit for computer-aided musicology.