WowAce

Raid loot tracking and text generation

Inspects all members of raid and saves in database, as well as lists people's dkp values

Gears skins for Masque.

Shows you a much bigger icon selection frame

FuBar_TransporterFu

Cleans up minimap buttons and makes them accessible through a pop out menu!

Proximo

Addon to provide a much nicer map

Food/water macro generator

Guilder brings common guild-raid tasks together in one convenient place.

FuBar_MicroMenuFu

Allows you to preview weapon glow in Dressing Room.

Keeps track of space left in your bags.

Sphere

Libra

Niagara

Compact rune and proc display for Death Knights.

SpyGnome

provides enchanters with a decent tool for managing their profession

Improved Questing Experience