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.

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

Modular casting bar.

Modular damage meter.

Estimated range display. Type /rangedisplay for config

Arena unit frames

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...

Automatically enables or disables combat logging based on location.

A lightweight, flexible, multi-target threat meter.

Automatically turns on the combat log for selected raid and mythic+ instances.

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.

Floating Combat Text of awesomeness. Caw. It'll eat your crackers.

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

Aloft

Configurable Castbars

AnyFont

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

A simple combat log that displays events similar to SCT