WowAce

Fancy up the ExtraActionButton frame

Data broker for keeping track of your Ankh cooldown.

WhisperBid

Provides data about all artifacts in the player's possession.

Displays both Kalecgos and Sathrovarr the Corruptor hit points during the encounter.

JostleLib

Shows a countdown bar for the duration of auras (e.g. HoTs, DoTs)

AllYouCanEat shows information about the following statistics: beverages, foods, bandage types, potions, elixirs and flasks.

Simple, nice-looking power bar addon for all classes.

Adds aura indicators to unit frames

Communicates with guild members for their positions on the world map

Fudge

Paparazzi

Small addon to copy chat lines.

A helper addon for the achievements "Let It Snow", "Fistful of Love", "Shake Your Bunny-Maker", "Check Your Head", and "Turkey Lurkey"

ag_Pimpster

Allows custom-triggered boss mod timers to be created

"Shows Call To Arms status in an LDB data provider."

Audible Alerts for self-gain, self-lost, any-gain, all-lost of statuses.

FuriousTask