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eythaann/Seelen-UI

A fully customizable desktop environment for Windows 10/11 that replaces the taskbar, dock, launcher, and window manager with themeable components.

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What is it?

Seelen UI is a desktop environment replacement for Windows. It replaces shell elements such as the taskbar, dock, app launcher, flyouts, and virtual desktops with customizable versions, and it is built with Tauri, using web technologies for its interface.

The project combines a tiling window manager with per-app rules, workspaces with per-workspace wallpapers, and desktop widgets rendered on the wallpaper layer. Appearance is controlled through a CSS and JSON theming engine, and the wallpaper-based dynamic accent color keeps shell elements in sync with the background.

Widgets can be built with Svelte and TypeScript and have IPC access to system state. Configuration is stored in plain files, and the interface is localized into more than 70 languages. It is distributed through the Microsoft Store, Winget, and GitHub Releases.

Key features

  • 01Replaces the Windows taskbar, dock, start menu, and system flyouts with themeable versions.
  • 02Tiling window manager with per-app rules, floating mode, and configurable gaps.
  • 03Virtual desktops with a named, icon-tagged workspace system and per-workspace wallpapers.
  • 04Desktop widgets that can be themed individually and built with Svelte and TypeScript.
  • 05Dynamic accent color derived from the current wallpaper.
  • 06Keyboard-driven app launcher with fuzzy search and a media module.

Use cases

  • Power users who want keyboard-driven window tiling on Windows.
  • Designers who want to build and share custom Windows shell themes.
  • Developers who want to write desktop widgets with web technologies.

Quick start

  1. 1

    Install from the Microsoft Store

  2. 2

    Or install via Winget from the terminal

    winget install --id Seelen.SeelenUI
  3. 3

    Or download the .msix or .exe from GitHub Releases

  4. 4

    Open Seelen UI and follow the settings interface to enable components

Things to know

  • Windows 10/11 only.
  • Requires the WebView runtime and Microsoft Edge to be installed.
  • Licensed under AGPL-3.0, a copyleft license that requires derivative works to be released under the same terms.

Topics

#windows#desktop-environment#tiling-window-manager#tauri#rust#theming#taskbar#customization#app-launcher#desktop-application

FAQ

What is Seelen-UI?
A fully customizable desktop environment for Windows 10/11 that replaces the taskbar, dock, launcher, and window manager with themeable components. Seelen UI is a desktop environment replacement for Windows. It replaces shell elements such as the taskbar, dock, app launcher, flyouts, and virtual desktops with customizable versions, and it is built with Tauri, using web technologies for its interface.
Is Seelen-UI free to use? What license does it have?
Seelen-UI is open source under the AGPL-3.0 license. Check the license terms before using it in commercial products.
Is Seelen-UI still maintained?
Actively maintained. The last commit to Seelen-UI was on Oct 21, 2026.
What can I use Seelen-UI for?
Power users who want keyboard-driven window tiling on Windows. Designers who want to build and share custom Windows shell themes. Developers who want to write desktop widgets with web technologies.
How do I install Seelen-UI?
Install from the Microsoft Store Or install via Winget from the terminal: winget install --id Seelen.SeelenUI Or download the .msix or .exe from GitHub Releases Open Seelen UI and follow the settings interface to enable components
Where can I get Seelen-UI?
The source code and installation instructions are on GitHub: https://github.com/eythaann/Seelen-UI

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