Ocean beta - Make music with friends in your browser
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.
iO-808 - Rhythm composer modeled after Roland's TR-808 drum machine.
Guitar Pro 7 - Create, play and share your tabs
Cameo - Book personalized video shoutouts from your favorite people
Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.