Any good addons?

I am just curious, does anyone know of any good addons to guilwars that are reliable(aka not scamming to get your account key) and useful. Like mabe some addons similar to thottbott for WoW, or anything that enhances the game... UI mods mabe (although i dont think the ui is necesairly modable) just anything along those lines.. Thanks in advance!

Third party programs/mods/bots are Not Legal by any means.

Please let those two words burn in your mind so that you do not ask this question again.