WowAce

KeepItCool

ViewAddonMessage

Tooltip scanning library.

Tank statistics Data Broker plugin.

A simple addon that warns you if your pet isn't attacking while you're in combat.

A library which provide tools for detecting adverse effects on units.

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

See all incoming casts on your target. Also includes resurrection monitor. Uses libhealcomm-3.0 and librescomm-1.0

AssignAssist

Allows raid leaders to view information on raid or guild member equipment information

Really very early stage. No, earlier than that.

Diplomat

Draws 3D portraits for main units that can be moved or resized at will.

Calculates the relative value of attributes towards physical dps.

Notifies you when you get aggro.

GDKP gold run ledger

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

Raid cooldown assignments for healers

Automatically and immediately cancels all in-game cinematics and movies

DrumCoord