Real-time osu!mania dan overlay (tosu plugin): independent 4K/6K/7K dan systems, 6 built-in algorithms, optional Prism for 6K/7K (beta), segment-level vibro detection. / 实时 osu!mania 段位 overlay（tosu 插件）：4K/6K/7K 三套独立段位、六种内置算法、6K/7K 可选 Prism（测试版）、分段级 vibro 识别
osu! performance point and difficulty calculator
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)
osu!mania 7K difficulty engine and desktop toolkit: star ratings calibrated to the Jinjin dan ladder, replay profiling, downscaling, chart generation.
Standalone JavaScript compatibility implementation of Sunny Rework for osu!mania
Pure Python pp and star-rating calculator for osu!standard. Arbitrary scores, lazer/stable (CL), score validation, beatmaps from bytes and per-object difficulty series. Matches osu! 20260706 (2026 Q2 rebalance). No dependencies; verified against osu!'s C# code
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