Version 1.0.12d - Recommended
It is made to be run on both servers with and without the mod. On servers without the mod, each player will have a random installed hat on (configurable). On servers with the mod, each player gets to show off their own choice of hat.
But that's not all ! Leveraging an extended NEI HUD, it is also capable of showing the name of blocks and mods ingame, right on top of your screen.
And if this is not enough, it comes with a few integrated modules to show internal information of some specific blocks. For now, BC tanks have been implemented (shows the content, capacity and amount of fluid) and IC2 machines (shows the In/out voltage).