Alternative System Monitor Applet For LXDE, Xfce, And MATE: Multiload-ng

Multiload-ng is a GTK2 graphical system monitor for the Xfce, LXDE, and MATE panels, forked from the old GNOME Multiload applet. It can also run in a standalone window.

The applet features graphs for CPU, memory, network, swap, load average, disk, and temperature, with more to come.