GNotifier 1.7.9 No Restart
GNotifier integrates Firefox's notifications with the native
notification system from Linux desktop (or MAC OS X). It supports: GNOME, KDE, Xfce,
Cinnamon, MATE, LXDE and Unity.
This add-on has been preliminarily reviewed by Mozilla. Learn more
This add-on is not compatible with your version of Firefox because of the following: