osu.net

Credits and Licences

The osu.net player is built from other people's work. This page lists the projects, people and licences behind it.

The player: webosu!

The osu.net player is webosu! 3.3, an unofficial, open-source web port of osu! standard, with small changes by us that are described on the about page. Its source code is released under the MIT License with the notice:

Copyright (c) 2015 Drew DeVault

The project began as Drew DeVault's osu-web player in 2015, was continued as webosu by 111116, and was developed into webosu! 3.x by BlaNKtext and contributors. The current source is at github.com/BlaNKtext/webosu. The webosu! credits thank txst54 for custom hitsound support and Calemy for refactoring the beatmap fetching code, improving load times and for Mino, the beatmap mirror the player uses. Thank you to everyone who worked on it.

Default skin and hit sounds

The default skin graphics and hit sounds used by the player are the work of ppy, © ppy Pty Ltd, and are licensed under the Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). osu! is a trademark of ppy Pty Ltd, and osu.net is not affiliated with or endorsed by ppy Pty Ltd.

Open-source libraries

  • PixiJS 6.5.10, the WebGL renderer. MIT License.
  • RequireJS 2.3.7, the module loader. Copyright jQuery Foundation and other contributors, MIT License.
  • localForage 1.10.0, browser storage for favorites and history. © 2013-2017 Mozilla, Apache License 2.0.
  • zip.js with zip-fs.js and inflate.js, which unpack beatmap archives. Copyright (c) 2013 Gildas Lormeau, BSD-style license. inflate.js is based on JZlib.
  • mp3-parser, in a modified version, for MP3 timing. Copyright (c) 2013-2016 Alex Lambiris, MIT License.
  • Underscore.js 1.8.3 and 1.13.7. Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors, MIT License.
  • Sound.js, a small Web Audio library from the Hexi project by kittykatattack.

Beatmaps, music and the mirror

Beatmaps are searched and downloaded live from Mino, a public community beatmap mirror. osu.net does not host any of them. Every beatmap belongs to the mapper who made it, and every song belongs to its artist and rights holders. Cover images on the map cards are loaded from the official osu! asset server. The player plays all of this content as provided; if you own rights in something and want it removed, see our terms of use.

The official game is at osu.ppy.sh.