That's the stats program built into CWP.
So when you are in the user control panel, on the main page under 'CWP Settings', look for 'Statistcs'
The next window that comes up will ask you to select 'Domain, Frequency, Data' and the click 'Generate'.
It will open a new window with the stats Dashboard, and if you look in the bottom left corner, the sideways test will read 'by GoAccess v1.9.4 and GWSocket', if you have the latest version installed with AL9.
Also on the right side you will see Goaccess Log Analyzer where you can also delete old files to save space.