Is there any plugin that counts how long a player has spent logged in total? I want one to give promotions via groupmanager after they have played a specific amount of time, but just a list of how long players have played would do...
Have you tried Minequery? http://forums.bukkit.org/threads/dev-minequery-1-5.1358/ It performs similar functionality. It's also modification friendly, so I'm sure with a little help from a coder, you could get something written up that would check the server periodically and track what players are online and compile the data to a list.