XP Chart is a addon for World of Warcraft Classic: it displays a chart of experience gained versus played time.
The addon takes some records when you are levelling and the chart is available by clicking on the minimap icon or by typing "/xpc show", you can then compare your experience evolution between your different characters on a single graph.
This is the list of all the commands available:
"/xpchart help" : shows help info
"/xpchart show" : open Xp Chart window
"/xpchart hide" : close Xp Chart window
"/xpchart toggle" : toggle Xp Chart window
"/xpchart options" : open Xp Chart options
You can also replace "/xpchart" by "/xpc".