WowAce

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

Keeps track of healing spells cast by everyone in a group.

TabletLib

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

Show where the chests are for Withered Army Training

Adds two icon indicators to each corner (total: 8 icon indicators).

Open those clams (and other containers)

ImprovedTargetFrame

A Library for stat conversion, calculation and summarization.

Adds manabars to the sides of Grid frames.

tekProber

A fully featured library tracking all ongoing absorb effects

Filters AFK and DND messages after you've seen them once.

Damnation

mHud_Threat

A library to help with localization of Archeology dig sites

opens/closes all bags when at merchant (instead of only the backpack)

Interface-central mount management

A tool to appraise, estimate, or judge your equipment against the equipment of others.

Alternate Rune Display