WowAce

TradeBar

OneBag is a replacement for the default game bags that combines all the bags into one frame.

TunnelVision

Communicates with guild members for their positions on the world map

Constructs a SimC export string for an item without equipping it

Bars showing amount of buffstacks

Tank statistics Data Broker plugin.

Needja Tracker

A boss encounter engine used by other add-ons

RS_ClassColors

PoisonSwapper automatically manages weapon swapping for maximum DPS

Shows a frame to track your debuff on Malygos in phase three.

Make your whole party/raid aware of whats happening during and after a readycheck

A library that tells wether a item is a quest item or not (equipped or in bags)

Lute

FuBar_PetFu

Displays performance-related stats for shadow priests.

Stable

GraphLib

Assist you with faction transfers letting you know which mounts, spells, etc you have and what they will be swapped to.