Oculus Quest - An all-in-one VR system
Clone Hero - Clone Hero is a free rhythm game, which can be played with any 5 or 6 button guitar controller...
Microsoft Hololens - Augmented reality headset from Microsoft
StepMania - Rhythm game for Windows, Mac, and Linux.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Osu - Osu is Music, Rhythm, Single and Multiplayer video game developed by Dean Herbert.