Seelen-UI is a graphical shell and window management utility for Windows that provides a modular, keyboard-driven desktop environment. It enables users to organize application windows through automated tiling, stacking, and floating layouts, while offering a framework for creating interactive desktop widgets using web technologies.
The project distinguishes itself by integrating a web-based rendering engine that bridges system-state data to HTML and CSS interfaces, allowing for highly customizable widgets and dynamic visual themes. It features real-time wallpaper analysis to automatically synchronize accent colors across the entire shell, ensuring a cohesive visual identity that adapts to the user's background imagery.
Beyond its core window management capabilities, the environment includes a comprehensive suite of automation tools, such as a fuzzy-matching application launcher, global hotkey configuration, and system-wide input interception. Users can manage their workspace through file-based configuration, which maintains consistent settings and preferences across sessions. The platform also provides mechanisms for monitoring hardware metrics and media playback, exposing this data directly to the desktop interface for persistent visibility.