A simple Lagbar that you can move around. It will show you your current FPS and the current Latency (or Lag) that you are experiencing. (Supports world/realm ping as well)

To move the frame, simply hold down SHIFT and drag the LagBar frame.

Slash Commands:
/lagbar reset - resets window position to the center of the screen ;
/lagbar bg - shows/hides the background of the window ;
/lagbar scale # - changes the scale of the LagBar frame ;