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Enable/disable easily gnome shell extensions from a menu in the top panel. Also allows to edit the settings of the extensions. Feedback welcome!
Toggle systemd services on/off from a popup menu in the top gnome panel. Can be used to start services like apache2, mysql, postgres. It uses `pkexec' to run `sytemctl'. If you want to start services without entering a password you have to polkit policy file. An example policy file can be found in the github repository.