WowAce

A bar style display for broker plugins. Formerly ChocolateBar. Alternative to Fubar, Bazooka, TitanPanel, Fortress, ...

StarTip (Tooltips from Outerspace)

Dynamic mount macro generator

Unit Frames of awesomeness. Woof. It'll bite your face off.

A replacement tradeskill window

Addon to manipulate the map

LiteStep skins for Masque.

Aloft

Calculates and shows your TankPoints in the PaperDall Frame.

Complete tradeskill information.

Tracks vulnerability debuffs on multiple mobs

AutoMagicly clicks though Daily Quests, and Turns them In.

Bulk mail reception made really easy

Create panels for customizing your UI, sucessor to eePanels

mount and companion manager

Rebuff yourself with the mousewheel.

Keeps account of attendance and loot for raids, parties, bgs, arenas and solo for questing.

Quest History tracker and shows lists of quests in each category

Switch macro depending on zones or BigWigs boss modules.

Library providing mappings between trade skill recipes, spells and created items