Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
JJazzLab - Fed up with boring backing tracks ? Try JJazzLab!
NtEd - Music Score Notation editor.
Guitar Pro 7 - Create, play and share your tabs
Band-in-a-Box - Band-in-a-Box is so easy to use!
Synfire - The comprehensive Music Prototyping Studio for professionals and enthusiasts.