WowAce

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

Records Damage and Healing for Graph Based Display.

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

Modular damage meter.

Modular casting bar.

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

A lightweight, flexible, multi-target threat meter.

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...

Estimated range display. Type /rangedisplay for config

Configurable Castbars

Arena unit frames

Numerical and graphical display of Combo Points and similar buffs/debuffs. Also tracks Holy Power and Soul Shards.

Adds Scrolling Combat Text above your character

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

Compact rune and proc display for Death Knights.

Automatically enables or disables combat logging based on location.

Show buffs on nameplates.

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

In-game theorycraft. Calculates actual damage/healing based on gear, talents and buffs.

Death analysis tool