WowAce

Show a rough range indicator

Tracks and announces interrupts (eg. Hit/Miss/Immune) and is also able to track and report "wasted" interrupts (those which d...

Shows a countdown bar for the duration of auras (e.g. HoTs, DoTs)

LDB display addon with one Blockoblock per plugin.

GirlFriend

Improvements to the standard Blizzard Eclipse bar for balance druids. Use /ebp for the config screen.

aUF_Banzai

Surfaces

FuBar_TraxieFu

Makes the Blizzard options frame movable and resizable

A helper addon for the achievements "Let It Snow", "Fistful of Love", "Shake Your Bunny-Maker", "Check Your Head", and "Turkey Lurkey"

ElfReloaded

Menagerie

oUF element for highlighting debuffs that are dispellable by the player

LDB data source displaying character stats

Poppins

Helps you see the Halion's Corporeality during phase 3

Compact scrolling vendor frame

Add-on that shows in a unit tooltip window a number of killed mobs of the same kind

Manage Raid Queues