Wayland screen overlay apps
eww
Issues:
- eww windows also hide behind fullscreen mode
- Not possible to show window on all monitors
Other overlay apps
- nwg-wrapper
- Can display text on (empty !) wayland screens
- not under active development
- r/swaywm: Searching for (popup) terminal emulator with overlay wayland shell support
- Floating windows (i.e. scratchpad) doesn't work in full screen mode
- waytext
- last commit 2023
Non-overlay options
- zenity
- dialog program