Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.
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.
Mythos - Mythos is an Action and MMORPG video game published by Hanbit Soft and developed by Flagship Studios.
Guitar Pro 7 - Create, play and share your tabs
Huboard - HuBoard is built from the ground up using the GitHub public API.
Booklet - Modern forum + directory for professional groups