WowAce

Display who crossed the charges on Thaddius

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

EquivalencePoints

Tooltip scanning library.

XArt

Light-weight enhanced casting bars

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

Tank statistics Data Broker plugin.

Gnomish math at its best!

Show an in combat indicator

ViewAddonMessage

IDCard

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

Puts a timer in /yell when you get Unbound Plague during the Heroic Professor Putricide encounter

ERP

Animated target indicator

For Developers (of Addons which uses LibWho-2.0): show queues and queries in realtime

Checklist and notes addon.

VisualThemes

A Small movable frame that shows who in your party has your Renewing Mist buff