lively

Lively Wallpaper is a free and open-source application for Windows that allows users to set animated desktop wallpapers and screensavers. It is powered by WinUI 3 and the WindowsAppSDK framework, offering a modern Windows 11 design. The software supports various wallpaper types, including video/GIF files, webpages, and even applications or games (such as Unity or Godot projects), with some being interactive. It also includes a screensaver feature that can use any wallpaper, supports multiple monitors, and offers automation through command-line arguments for integration with scripting tools like Python or AutoHotKey. Developers can leverage the Lively API to create interactive wallpapers with access to hardware readings, audio graphs, and music information. Machine learning inference is also supported for dynamic wallpapers. Performance optimizations include pausing wallpaper playback during fullscreen applications or games, rules based on foreground apps, battery power settings, and remote desktop sessions. The project is fully open-source under the GPL-v3 license and available via the Microsoft Store or as an installer for Windows 10 1903 or above.