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.
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.
Guitar Pro 7 - Create, play and share your tabs
Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.
Flat - Online collaborative music score and tab editor, accessible from any device
LilyPond - GNU LilyPond is a computer program for music engraving.