Credits
OrielOS stands on the work of many free and open-source projects. Thank you to everyone who makes them.
The projects OrielOS is built on
- Fedora: the base system and its packages. Licences vary by package, mostly the free licences Fedora lists.
- bootc: image-based updates, which install OrielOS as one image with a way back to the previous version. Apache-2.0 or MIT.
- KDE Plasma: the desktop, under OrielOS’s taskbar, Start and look. Mainly GPL-2.0-or-later and LGPL-2.1-or-later.
- Universal Blue: the NVIDIA driver modules, signed for Secure Boot, and tools for building the image. Apache-2.0.
- NVIDIA’s driver: the graphics driver for NVIDIA RTX cards. A proprietary user-space driver, with open kernel modules under MIT and GPL-2.0.
- Flathub: the apps in the Store. Each app has its own licence.
- Proton: Valve’s compatibility layer, which runs Windows games on Linux. BSD-3-Clause, plus its components’ licences.
- GE-Proton: a build of Proton with extra fixes, OrielOS’s default for Windows games. BSD-3-Clause, plus its components’ licences.
- Wine: runs Windows programs, underneath Proton. LGPL-2.1-or-later.
- DXVK: translates Direct3D 8 to 11 into Vulkan for games. zlib.
- VKD3D-Proton: translates Direct3D 12 into Vulkan for games. LGPL-2.1-or-later.
- Firefox: the web browser, there from the first start. MPL-2.0.
Artwork, fonts and sounds
Every image, font and sound file in OrielOS, with its author, source and licence.
| Files | Author | Source | Licence |
|---|---|---|---|
logo/*.svg | OrielOS contributors | Original | CC BY-SA 4.0 |
icons/orielos-start.svg | OrielOS contributors | Original | CC BY-SA 4.0 |
splash/*.svg, splash/*.png | OrielOS contributors | Original | CC BY-SA 4.0 |
wallpapers/src/*.svg | OrielOS contributors | Original | CC BY-SA 4.0 |
wallpapers/OrielOS/**, wallpapers/OrielOS-Horizon/** | OrielOS contributors | Rendered from wallpapers/src/ | CC BY-SA 4.0 |
sounds/src/generate.py, sounds/orielos/index.theme | OrielOS contributors | Original | CC BY-SA 4.0 |
sounds/orielos/stereo/*.oga | OrielOS contributors | Synthesised by sounds/src/generate.py from sine waves, with no recordings or samples | CC BY-SA 4.0 |
../.github/assets/readme-banner.png, ../.github/assets/readme-banner-dark.png | OrielOS contributors | Original | CC BY-SA 4.0 |
Fonts
| Font | Used in | Author | Source | Licence |
|---|---|---|---|---|
| Noto Sans Display, Bold and Regular | The wordmark in the logos, the boot splash logo and the README banners, converted to outlines | Google and the Noto project authors | https://github.com/notofonts/latin-greek-cyrillic | SIL Open Font License 1.1 |
The SVG files contain the letter shapes as outlines rather than the fonts themselves. The OFL allows this, and no font file is shipped from this folder.
From other projects
These are installed with OrielOS's own files but come from the projects named. OrielOS doesn't change them.
| Files | Used in | Author | Source | Licence |
|---|---|---|---|---|
The spinner, password and keyboard images of Plymouth's spinner theme (throbber-*.png, animation-*.png, bullet.png, capslock.png, entry.png, keyboard.png, keymap-render.png, lock.png) | The boot splash, copied from Fedora's plymouth-theme-spinner package at build time | Jakub Steiner and the Plymouth authors | https://gitlab.freedesktop.org/plymouth/plymouth | GPL-2.0-or-later |
SDDM's Breeze theme (everything in /usr/share/sddm/themes/orielos but OrielOS's Main.qml, metadata.desktop and theme.conf, including the default avatar faces/.face.icon) | The sign-in screen, copied from Fedora's sddm-breeze package at build time | KDE's Plasma developers | https://invent.kde.org/plasma/plasma-desktop | LGPL-2.0-or-later |
plasma/color-schemes/OrielOSLight.colors, OrielOSDark.colors | OrielOS's colour schemes, with OrielOS's palette in Breeze's structure | Breeze's authors and OrielOS contributors | https://invent.kde.org/plasma/breeze | LGPL-2.0-or-later |
The system's icons, cursors, sounds and fonts
OrielOS uses these themes from Fedora's packages as they are, with no files of its own in them. The icon theme is KDE's own Breeze, so there is nothing of unclear origin to replace.
| Theme | Package (version in the image, 2026-10-26) | Author | Source | Licence |
|---|---|---|---|---|
| Breeze and Breeze Dark icons | breeze-icon-theme 6.31.0 | KDE | https://invent.kde.org/frameworks/breeze-icons | LGPL-2.1-or-later, LGPL-3.0-or-later and CC BY-SA 4.0 |
| Breeze cursors and window decorations | breeze-cursor-theme, plasma-breeze 6.7.5 | KDE | https://invent.kde.org/plasma/breeze | GPL-2.0-or-later and others (BSD-3-Clause, CC0-1.0, MIT) |
| Ocean, Plasma's sound theme | ocean-sound-theme 6.7.5 | KDE | https://invent.kde.org/plasma/ocean-sound-theme | CC BY-SA 4.0, CC0-1.0 and BSD-2-Clause |
| The freedesktop.org sounds, which Ocean falls back to | sound-theme-freedesktop 0.8 | freedesktop.org | https://www.freedesktop.org/wiki/Specifications/sound-theme-spec | GPL-2.0-or-later, CC BY-SA 3.0 and others |
| Noto Sans, Noto Sans Mono, Noto Sans CJK and Noto Color Emoji | google-noto-*-fonts | Google and the Noto project authors | https://notofonts.github.io/ | SIL Open Font License 1.1 (Noto Color Emoji also Apache-2.0) |
What is not here
None of this artwork comes from Microsoft or is derived from Microsoft's logos, fonts, icons, sounds or wallpapers.
This website
- The text is set in Noto Sans and Noto Sans Display, by Google and the Noto project authors, from Fontsource. SIL Open Font License 1.1.
- The GitHub and Discord marks on the community buttons come from Simple Icons. CC0-1.0.
OrielOS is not affiliated with Microsoft. Windows is a trademark of Microsoft Corporation.