WowAce

Try on different gear and see their total stats and their differences. In short, an ingame CT-Profiles-like addon.

EBB adds groups of bars to your screen showing you which (de)buffs currently affect your toon or some other units.

Entropy skins for Masque.

From bags we came, to bank we return

Tracks herbs/ore/items that can be broken into component pieces

Data Broker Display similar to FuBar

Bulk mail sending made really easy

Tooltip of awesomeness. Moo. It'll graze your pasture.

StarTip (Tooltips from Outerspace)

Lightweight Chat Improvements

Create panels for customizing your UI, sucessor to eePanels

A simple slash-command-based addon for querying item information from the Blizzard servers via ItemIDs and SpellIDs.

Enables multi-line/unlimited-length pasting of text or commands into WoW

Babble-2.2

Inserts additionnal fonts into SharedMediaLib's storage.

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

LiteStep skins for Masque.

StatLogicLib

Bulk mail reception made really easy

Library that tracks incoming heals