Cytoid

The official open-source osu! client (lazer): click, tap and drag to the rhythm across a huge library of community-made beatmaps.

⬤▗▚▚▚ Web-based online rhythm action game. Based on HTML5 technologies, React, Redux and Pixi.js.

Yet Another Rhythm Game: a free, open-source plastic-guitar game supporting guitar, drums, vocals and more, with instrument controllers.

The ultimate community-driven, and open-source competitive rhythm game available on Steam.

Cross-platform rhythm game based on Java and libGDX.

A rhythm game for keyboard players that grew out of StepMania, with online scoreboards, multiplayer and an active community.