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