WowAce

Display who crossed the charges on Thaddius

Make it easy to explain bosses in Raids.

Handles the assignment, coordination, and announcement of many parts of the Lich King encounter in Icecrown Citadel.

T_RPP

A loot distribution addon meant to improve master looting during raids.

Shows the minimum durability of equipped items on the stats frame.

FuBar_RaidBuffFu

Make your whole party/raid aware of whats happening during and after a readycheck

Tells you which blob to kill at the Yor'sahj encounter in Dragon Soul.

Announces interrupts in the chat

Provides buttons and keybinds for raid flare world markers that never stop working mid-session

Simple, light-weight, LDB-enabled timer that tracks how long you spend in combat

RaidGroupNumber

A boss encounter engine used by other add-ons

Displays a reliable cooldown timer for the Shaman Ascendance ability

AutoAcceptInvite

Shows a frame to track your debuff on Malygos in phase three.

Adds achievement reminders to BigWigs

Calculates incoming damage avoidance and mitigation

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