WowAce

"Your quest log is full". How many quests do you have in your log?

Client for allowing the raid leader to gauge interest on items in a method similar to a ready-check.

Cartographer_Fishing

Persists collapsed state of headers across wow sessions.

Emerge@Durotan-EU Raid Tracker

Prospecting and Disenchanting Aide

mHud

Make it easy to explain bosses in Raids.

Death reports

Adds aura indicators to unit frames

StitchUI

Adds talent specialization role status to Grid.

Uses guild notes to add alts' main names to chat windows and other places

EUF is an enhance of wow original unit frames, provides hp with both value and %, and optional 3D portrait. Simple and Useful.

ChatHighlighter

Visual Raid Cooldown Tracking

Adds a couple of graph displays to Skada.

Add-on that shows which battle pets can be farmed this week

Announces Mage Spells in chat.

FuBar_NinjutFu