WowAce

A powerful, comprehensive utilty for displaying graphics and information based on buffs, debuffs, and other triggers.

Afflictions display and cleaning for solo, group and raid with advanced filtering and priority system.

Modular casting bar.

Tracks Raid/Instance/World Boss lockouts for all your characters, daily/weekly quests, currencies, trade cooldowns, and more!

In World of Warcraft healers have to die. This is a cruel truth that you're taught very early in the game. This add-on helps you influence this unfortunate destiny in a way or another depending on the healer's side...

Arena unit frames

Modular damage meter.

A lightweight, flexible, multi-target threat meter.

Estimated range display. Type /rangedisplay for config

EBB adds groups of bars to your screen showing you which (de)buffs currently affect your toon or some other units.

Deathknight Rune Display

Compact rune and proc display for Death Knights.

Show buffs on nameplates.

Death analysis tool

Automatically enables or disables combat logging based on location.

Timers for Buffs, DOTs, CC effects, etc..

Makes a sound when your focus starts casting. Use with [target=focus] macros for interrupts (Counterspell, Spell Lock, Wind ...

Configurable Castbars

AnyFont

Tracks the Blood Shield for Death Knights.