CPU Frequency Scaling GNOME Applet for Linux. GFreqlet is a GNOME applet for Linux that not only monitors CPU frequency scaling, but also allows the end user to change the frequency or governor with just a click. It automatically detects which frequencies and governors your processor supports, so there is no configuration required. The applet itself is not run as root, nor required to modify to run with root ownership, but password prompts with gksudo if a super user action is required. GFreqlet is very straight forward and minimal.