Übersicht vs Eww

Übersicht is a free macOS app that places the output of system commands on the desktop in small widgets. Widgets can present information as tables, charts, or graphs, adapt to screen sizes, and are written in HTML5, JavaScript, and React JSX. The app includes a gallery and installation instructions for community widgets, spanning categories such as system monitoring, clocks, calendars, weather, RSS feeds, networking, and media. For development, Übersicht watches the widget directory and updates the display when files change. Commands run at a configurable interval, once per second by default, or can be set not to refresh automatically. A built-in local proxy supports Ajax requests to external sites, and AppleScript scripting is available. The download page specifies macOS 12 or later, and the app is released under the GNU General Public License version 3 or a later version at the user's option. Widgets can execute arbitrary code, so the maker advises checking their source; malicious code cannot be ruled out.

Eww is a free, MIT-licensed widget system for Linux. It lets you build desktop widgets that work with any window manager, without depending on that manager. You define widget structure, window geometry, behavior, state, and data in the Yuck language. Styling uses CSS or SCSS through GTK’s CSS engine, whose web-CSS support is incomplete for some animations and layout properties. Built-in variables can expose CPU, RAM, disk, battery, network, and time information. Polling variables rerun shell scripts repeatedly, while listening variables update when script output produces a new line. Available widgets include labels, buttons, images, inputs, progress displays, calendars, graphs, tooltips, overlays, stacks, and layout containers. Documentation shows xprop and playerctl integrations. Separate build commands cover X11 and Wayland. Building requires Rust, Cargo, GTK3, Pango, Cairo, and GLib. Window arguments remain constant after opening.