WowAce

Simple addon that sends EG gear/main data without running the full client

Provides quick access to information on your group and their equipment, enchant and gem choices.

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

Quest information

Ich bin ein Paparazzi.

Automatically swaps between weapons and lances.

Saves your watched quests and achivement between sessions

useful and helpful

XP plugin for DataBroker display.

Automatically accepts and turns in the Holiday "fly around the world" quests.

Improved Quest Tracker

Shows your standings with the factions.

Provides help for your daily quests.

Kandarz Extended Quest Log

Drop the cheapest thing you're carrying

Relays item drops to your guild chat.

RepBarSome

Simple quest item bar.

VendorSearch adds search features when buying items from any vendor

Monitor the remaining duration on your Mysterious Eggs and other perishable items.