WowAce

Announces interrupts in the chat

Recap

Lag tolerance module for Broker displays.

Provides information about the player's bodyguard.

ActionCombat

Calculates optimal reforging for given weights/caps.

Vengeance module for Broker displays.

SpellWatch

RangeRecolor

Instant PROC notification

Adds Outfitter set filters to AdiBags.

FuBar_SWStats2Fu

Adds your damage to Scrolling Combat Text

Adds aura indicators to unit frames

RotLatency keeps track of your reaction to cooldown expiration.

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

A seperate focus bar, with focus gain prediction and rotation forecast.

CombatAnnounce

FuBar_DPS

A DPS Data Broker plugin.