WowAce

Displays performance-related stats for shadow priests.

FuBar_PetInFu

Armored man and paper doll durability modifier

Monitors AP when dots are applied, clearly showing current vs applied AP levels.

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

Quest information

Automatically generate and announce optimal spirit totem assignments during the Gara'jal encounter in Mogu'shan Vaults.

Assist you with faction transfers letting you know which mounts, spells, etc you have and what they will be swapped to.

Waitlist addon with EPGP Mass Award hooking.

Automatic ammo reloading and selection, with warnings.

A frame with a text that gives you the amount absorb left on target, or in TankMode absorbs left on yourself.

Scaffold

Communicates with guild members for their positions on the world map

LibRockComm-1.0

Add-on that shows in a unit tooltip window a number of killed mobs of the same kind

Automatically sells low quality gray items and selected white items to the vendor.

Shows the minimum durability of equipped items on the stats frame.

Adds aggro coloring to oUF.

SkadaScroll is a plug-in for Skada Damage Meter that provides additional options for scrolling the bar displays. It requires ...

Shows a money overview for your current realm in the tooltip on the money in your bags