WowAce

Draws some lovely 3D portraits in the standard Blizzard artwork.

A frame designed for each specialization of druid's watching their main power and important buffs/debuffs

Combat Alert

Adds Friend and Guild options to the context menu of player units.

Provides access to all teleporting spells and items on right click of minimap button.

ClosetGnome_Mount

Complain about crowd control breaks.

Lag tolerance module for Broker displays.

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

SurgeonGeneral Listen CLient

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

RotLatency keeps track of your reaction to cooldown expiration.

FuBar_ExperienceFu

ComboSounds

Generate a macro with random mounts

Quest helping: fetching items to use, that sort of thing.

Notifies you of experience gains

Open those clams (and other containers)

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

A Data Broker plugin to show AddOn memory usage.