WowAce

KC_Items

FelwoodFarmer

GridStatusIncomingHeals

Provides training reminders to help decipher the Blizzard Spell Alerts.

A simple addon that warns you if your pet isn't attacking while you're in combat.

Simple loot specialisation display with selection in tooltip.

Adds aura indicators to unit frames

Shows activity for hidden ChatFrames by making their tabs flash.

Social tracking suite.

Adds Name and Buyout Price sort columns to the auction house.

XML import library

Allows tradeskill usage by clicking items or reagents.

Provides the the health and target of by an unit targeted mob (meant to be used for tanks).

Plays amusing sounds whenever you skin a mob

Right-click on minimap blips to open a targeting menu (out of combat).

TGuildFrame

Enable/Disable addons for your character in game

BanzaiLib

FuBar_KTMFu

Provides extended aura status settings.