Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Guitar Pro 7 - Create, play and share your tabs
MuseScore.org - Create, play back and print beautiful sheet music with free and easy to use music notation software MuseScore. For Windows, Mac and Linux.
alphaTab - alphaTab is a cross platform music notation and guitar tablature rendering library.
MuseScore - Our goal is to let musicians from all over the world create and share their works, as well as to make learning music exciting, easy and available for all.
Jameasy for Violin - Play rhythm game with a real violin. you can play with background music and real-time feedback