WowAce

This will keep track of how much you have paid per item in your inventory. Only one of (Auctionator, Auctioneer, AuctionLite,...

FuBar_PoisonReminderFu

Review any raid or party members recent incoming combat along with health level.

tekSupport

mHud

DeuceCommander

FuBar_TrainerFu

Buffalo2

Library handling communcation for Magic* addons

Considers an item against all the items you have to determine whether or not it is an upgrade

eeShards

Allows you to prevent addons from sending and receiving messages.

Gathers statistics on certain chance-on-use spells, also known as procs.

Manages tracking of raid attendance, loot, and more.

Show where the chests are for Withered Army Training

Database of Vendor locations for HandyNotes

Provides database of quest giving npcs/mobs/objects for display on the World Map/Minimap

FuBar_OutfitterFu

Display bag usage on each of your bag slots.

Pins on the World Map for quests you have not completed yet