osu!mania 4K dan calculator and toolkit: dan analyzer, rate changer, marathons, practice sessions, in-game overlay, map generator, skin editor (osu! stable, lazer, Interlude)
electron windows overlay rhythm-game osu vsrg interlude osu-mania skin-editor osu-lazer difficulty-calculator beatmap-generator osu-tools dan-calculator
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Updated
Nov 8, 2026 - JavaScript