Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
JJazzLab - Fed up with boring backing tracks ? Try JJazzLab!
GNUitar - GNUitar is guitar effects software that allows you to use your PC as guitar processor.
Guitar Pro 7 - Create, play and share your tabs
Ampire - State Space Modeled guitar amp/cab/stompbox simulator.