WowAce

Co-ordinated targetless Party and Raid wipe recovery. Evolved

Talismonger-3.0

Babble-2.2

Manages social information with a focus on main-alt associations.

Heads-up minimap display

Load manager for AddOns

Priority 3 loot announce addon

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

Raid Frames using the oUF framework.

Keeps track of time played and rested XP across your characters.

provides enchanters with a decent tool for managing their profession

View an image of your guild vault from anywhere.

Toggles WoW to the forground on events.

Displays how many times you have jumped.

Automates bites during the Blood-Queen Lana'thel encounter in Icecrown Citadel

FuBar_MicroMenuFu

Automatically leaves the global channels when inside an instance/raid and restores them when exited.

StarTip (Tooltips from Outerspace)

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

Provides a quick display for the LFG Call to Arms