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.
Dorico - Dorico redefines the gold standard in scoring software.
Guitar Pro 7 - Create, play and share your tabs
capella playAlong - Practice your voice, play your solo with orchestra accompaniment, create rehearsal CDs, thousands of scores available
Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.
LilyPond - GNU LilyPond is a computer program for music engraving.