https://store.kde.org/p/1100895/
A fork of the default plasmoid but removes the icon and looks like a flat thin button. Can be configured to minimize all windows instead of "peaking" at the desktop, or to run a command. Scrolling over the button changes the volume, switch desktop, or any other command.
- Right Click Panel > Panel Options > Add Widgets
- Get New Widgets > Download New Widgets
- Search: Win7 Show Desktop
- Install
- Drag "Show Desktop (Win7)" to your panel.
git clone https://github.com/Zren/plasma-applets.git
cd plasma-applets/org.kde.plasma.win7showdesktop
./install
To update, run the ./update script. It will run a git pull then reinstall the applet. Please note this script will restart plasmashell (so you don't have to relog)!