gnome-shell-extension-cyclop-apps

One icon per Cyclop application installed on this machine, in the panel, with that application's main pages in its menu: the game library, the system monitor, the Updates panel of Settings. An icon appears only when its application is installed, so a machine on the free edition shows no icon for something it cannot open and nobody is advertised at. The menu holds pages, never system actions. Nothing here changes a setting, installs anything or asks for a password: a panel icon that can change the machine is a panel icon that changes it by accident.

sudo apt install gnome-shell-extension-cyclop-apps