- 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 14066, @forks 2094)
- Code language: C#
- Code license: MIT
- Code dependency: .NET
- Developer: _ltn, "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, alikindsys, alix, alula, Andrei Baciu, Andrei Zavatski, Andrew Hong, andy, anellie, Angela Zhang, apollo, azutake, B3nn1, Badewanne3, BananeVolante, Bartłomiej Dach, Bastian Pedersen, Berkan Diler, BlauFx, Brandon Dong, C0D3 M4513R, cdwcgt, CenTdemeern1, Charlie, Charlotte Herngreen, chayleaf, Christian Kamphausen, Christine Chen, ckie, clayton, "Clément Burgelin (Zyf)", Cootz, Crafti, Craftplacer, Damnae, Dan Balasescu, Daniel Kirschten, Dao Heng Liu, Darius, Darius Wattimena, David Paiva, David Zhao, Dawid Kraiński, Dawid Sośnia, Dean Herbert, default0, Derrick Timmermans, Desconocidosmh, Detze, Dragicafit, Drew DeVault, Drezi126, DTSDAO, Dylan Nantz, ekrctb, Elvendir, emu1337, Endrik, Fabian L, Fabian Lindgren, Feodor0090, Fire937, Firmatorenio, Fluxie, frankhjwx, FreezyLemon, Fukashi13, Fyodor Ryzhov, Gabe Livengood, Gagah Pangeran Rosfatiputra, Ganendra Afrasya, Givikap120, Grrum, Gyoshi, Hanamuke, Henry Lin, HiddenNode, HoLLy, Huo Yaoyuan, Ibby, iilwy, ilsubyeega-desu, Integer, Isaac Andrews, its5Q, Ivan Pavluk, Jack Boswell, Jack Lee, Jack Scotson, JackLee9355, Jacob, Jacob Odgård Tørring, Jai Sharma, James, James Wilson, James58899, Jamie Taylor, Jamieson Berida, Jan Jurzitza, Jarosław Zgierski, Jason Won, Jay Lawton, Jayden, Jesse Myers, Jessica Meng, Jihoon, Jihoon Yang, JimmyC7834, John Biddle, John Neijzen, Joppe27, jorolf, Joseph Madamba, Joseph-Ramos-CMU, Josh, Joshua Hegedus, Justin, Justus Tumacder, jvyden, KaisoBits, Kaleb, kamp, Keijia, Kelvin, Kenny Sun, Khangaroo, KoziLord, kyekiller, Kyle Chang, Laica, LastExceed, LeeMustache, Leon Gebler, Liam DeVoe, LiangXiang Shen, Lily, Loreos7, Lucas A., Lucas Arriesse, LukynkaCZE, M0RGaming, maarvin, Maciej Sołtys, MafinBoy, Magnus-Cosmos, Malox10, Marco Stephan, maromalo, Martin, Mateusz, MATRIX-feather, Matěj Černický, Max, Max Hübner, Maximilian Kruse, MBmasher, McEndu, Mikal S., Mikal Stordal, Mike Will, MillhioreF, miterosan, MK56, molneya, Morguldir, morguldir, Moritz Bender, n4b3l, Nabile Rahmani, Naeferith, NaiPofo, nanashi, Nao, naoey, Nathan, Nathan Alo, Nathan Du, Naxess, Noah M., Nostril, NotGumballer91, nwabear, O Thiago, OAO, ocboogie, odgaard, OliBomby, Olivier Schipper, Olle Kelderman, Ondřej Vajďák, Opelkuh, OpenSauce, Owen Young, Pariring, Pascal Pomper, Pasi, Pasi4K5, Patrick Andersson, Paul Teng, Pedro Montes Alcalde, PercyDan, Pereira Matthieu, pfg, phos, Piotrek Brzeziński, PM-CS, Poliwrath, Power Maker, Poyo, ProgrammaticNajel, ProTheory8, QuantumSno, qwewqa, recapitalverb, RedMindZ, rednir, Remie Richards, Rizon, RizonFTW, Robin Avery, Rodrigo Pina, rogerqcify, Ron B, Ronnie, Ronnie Moir, rootcan, RORIdev, roridev, Roxie Wattz, Ruki, rushii, Ryan Zmuda, Salman Ahmed, Samuel Cattini-Schultz, Samuel Huang, Santeri Nogelainen, Sebastian Krajewski, Semro, Seth, sh0ckR6, Shane Woolcock, Shawdooow, Shivam, smallketchup82, Sofia Lindgren, solstice23, Spooghetti420, StanR, Stedoss, su, Sunghwan Bang, Susko3, Swekka, Swords, tgi, TheOmyNomy, ThePyrotechnic, Thomas Müller, Thomas Tan, Tib, Tim Nolte, Tim Oliver, timiimit, Tom Arrow, TPGPL, Tyler, UselessToucan, Vidalee, Viktor Rosvall, Vincent Maggioli, VINXIS, Vivi, Vladimir Pavlov, voided, voidedWarranties, vperus, vunyunt, Walavouchey, wildtree, Willy Tu, Wleter, Wooster, Xexxar, Y. T., Yao Chung Hu, yesseruser, Инсур, 파링
See also: https://github.com/itdelatrisu/opsu, https://github.com/fluddokt/opsu, https://github.com/AnirudhRahul/opsu-Android