WowAce

Allows you to preview weapon glow in Dressing Room.

CandyBar style cooldown display

Incoming Heals

Adds party/raid role icons in useful places

provides enchanters with a decent tool for managing their profession

Incubator

An addon to assist with organizing healing in a raid set up.

Keeps track of your current location.

Keeps track of space left in your bags.

MendWatch

Reduces interface tedium by doing the little things for you.

AltClick an item in your bag to add it a mail, auction, or trade frame, and alt-click to buy a stack if reagents.

Check the consumable usage of your raid

Cartographer_QuestObjectives

A library to provide a clean dropdown menu interface.

RaidAgent

FuBar_InnboundFu

Modular and lightweight party/raid frames.

Keeps track of current money and all your characters on one realm.

Helps you decide which ability to use next according to priority you set