Frets on Fire - Bonus content.
Slack - A messaging app for teams who see through the Earth!
Rocksmith+ - Rocksmith builds off of the fundamentals of music games like Rock Band and Guitar Hero by offering fundamental lessons in actually playing guitar.
Mattermost - Mattermost is an open source alternative to Slack.
Osu - Osu is Music, Rhythm, Single and Multiplayer video game developed by Dean Herbert.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.