- Home: https://osu.ppy.sh/home
- Inspiration: Beatmania IIDX, Osu! Tatakae! Ouendan, Taiko no Tatsujin
- State: beta
- Download: https://osu.ppy.sh/home/download, https://github.com/ppy/osu/releases
- Platform: Windows, macOS, Android, iOS
- Keyword: music, clone, content open
- Code repository: https://github.com/ppy/osu.git (@created 2014, @stars 11061, @forks 1768)
- Code language: C#
- Code license: MIT
- Code dependency: .NET
- Developer: "Acid Chicken (硫酸鶏)", Adam Baker, Adonais Romero González, Aergwyn, aitani9, Akash Mozumdar, Albert Tang, Albie, Alchyr, Alden Wu, Alex, Alex Amadori, AlFas, alice isabel, alula, Andrei Zavatski, Andrew Hong, andy, anellie, Angela Zhang, apollo, azutake, B3nn1, BananeVolante, Bartłomiej Dach, Berkan Diler, BlauFx, cdwcgt, CenTdemeern1, Charlie, chayleaf, Christian Kamphausen, Christine Chen, ckie, clayton, Craftplacer, Damnae, Dan Balasescu, Darius Wattimena, David Paiva, David Zhao, Dawid Kraiński, Dean Herbert, default0, Derrick Timmermans, Desconocidosmh, Dragicafit, Drew DeVault, Drezi126, DTSDAO, ekrctb, emu1337, Endrik, Fabian L, Fabian Lindgren, Feodor0090, Fire937, Firmatorenio, frankhjwx, FreezyLemon, Fukashi13, Gabe Livengood, Gagah Pangeran Rosfatiputra, Ganendra Afrasya, Grrum, Hanamuke, Henry Lin, HiddenNode, HoLLy, Huo Yaoyuan, ilsubyeega-desu, Isaac Andrews, its5Q, Ivan Pavluk, Jack Boswell, Jack Lee, Jack Scotson, JackLee9355, Jacob, Jacob Odgård Tørring, Jai Sharma, James, James58899, Jamie Taylor, Jamieson Berida, Jan Jurzitza, Jarosław Zgierski, Jason Won, Jay Lawton, Jayden, Jesse Myers, Jessica Meng, Jihoon, Jihoon Yang, JimmyC7834, John Neijzen, Joppe27, jorolf, Joseph Madamba, Joseph-Ramos-CMU, Josh, Justin, Justus Tumacder, jvyden, Kaleb, kamp, Keijia, Kelvin, Kenny Sun, Khangaroo, KoziLord, kyekiller, Kyle Chang, Laica, LastExceed, LeeMustache, Leon Gebler, Liam DeVoe, LiangXiang Shen, Lucas A., Lucas Arriesse, LukynkaCZE, M0RGaming, Maciej Sołtys, MafinBoy, Malox10, Marco Stephan, maromalo, MATRIX-feather, Max, Max Hübner, MBmasher, McEndu, Mikal S., Mikal Stordal, MillhioreF, miterosan, MK56, molneya, Morguldir, morguldir, Moritz Bender, n4b3l, Nabile Rahmani, Naeferith, NaiPofo, nanashi, Nao, naoey, Nathan Alo, Nathan Du, Naxess, Noah M., Nostril, NotGumballer91, nwabear, O Thiago, OAO, ocboogie, odgaard, OliBomby, Olle Kelderman, Ondřej Vajďák, Opelkuh, Owen Young, Pariring, Pascal Pomper, Pasi4K5, Patrick Andersson, Paul Teng, PercyDan, Pereira Matthieu, pfg, phos, Piotrek Brzeziński, Poliwrath, Power Maker, Poyo, ProgrammaticNajel, ProTheory8, qwewqa, recapitalverb, RedMindZ, rednir, Remie Richards, Rizon, RizonFTW, Robin Avery, Ron B, Ronnie, Ronnie Moir, rootcan, RORIdev, roridev, Roxie Wattz, Ruki, Ryan Zmuda, Salman Ahmed, Samuel Cattini-Schultz, Samuel Huang, Santeri Nogelainen, Sebastian Krajewski, Semro, Seth, sh0ckR6, Shane Woolcock, Shawdooow, Shivam, solstice23, Spooghetti420, StanR, su, Sunghwan Bang, Susko3, Swords, tgi, TheOmyNomy, ThePyrotechnic, Thomas Müller, Thomas Tan, Tib, Tim Nolte, Tim Oliver, Tom Arrow, TPGPL, Tyler, UselessToucan, Vidalee, Viktor Rosvall, Vincent Maggioli, VINXIS, Vivi, Vladimir Pavlov, voided, voidedWarranties, vperus, vunyunt, wildtree, Willy Tu, Xexxar, Yao Chung Hu, Инсур
See also: https://github.com/itdelatrisu/opsu, https://github.com/fluddokt/opsu, https://github.com/AnirudhRahul/opsu-Android