Character Tracker is an addon originally written by Veresa, as part of "Veresa's Keep On Levelling Addons" package, last updated in 2006. Attempts at contacting Veresa have not resulted in any response, and her addons have all been listed as abandoned or deleted for abandonment from hosting sites.
The full name of the addon is Veresa's Character Tracker but will show up in your addon list as simply Character Tracker.
Character Tracker is a small addon that tracks each of your character's played time, along with name, level, class, and server, and gives a total combined level and played time. Its primary purpose is informational (just how much time total have you spent in World of Warcraft?) and not intended to track any other character statistics.
To use it, simply have the addon enabled for all characters you wish to be included in tracking.
To bring up the interface, type /vct.
Additional commands are:
displays the help screen
resets all stored data
/vct all on|off
toggles all of the below options on or off
toggles name display
toggles level display
toggles class display
toggles faction display
toggles realm display
toggles time display
Updated to use ADDON_LOADED instead of VARIABLES_LOADED
Added Death Knights to player classes
Compatibility updates for patch 4.01
New maintainer, FalconSpirit
1.0-b 1.11200 (2006.09.18)
Latest version from Veresa