Guitar Pro 7 - Create, play and share your tabs
TuxGuitar - A Multitrack tablature editor and player.
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
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.
OpenMPT - OpenMPT is a popular tracker software for Windows.
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.