WowAce

Tracks rare drops, including companions and mounts

Database of item upgrade IDs

Remember locations that city guards direct you to for HandyNotes

Uses various methods to scan your surroundings for rare or specified NPCs.

Inserts additionnal fonts into SharedMediaLib's storage.

Modular damage meter.

Caith skin for Masque.

In-game theorycraft. Calculates actual damage/healing based on gear, talents and buffs.

Dog-themed unit frames. Woof. Arf. Yip.

Database of Diminishing return categories and general data

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

Provides one or many informational windows with optional interactive widgets.

Redirect character errors, system messages and information messages.

Serenity skins for Masque.

Adirelle's bag addon.

Inventory Management with virtual bags divided into sections.

Changes the look of the default UI

A lightweight, flexible, multi-target threat meter.

Static library of wow map data

Data Broker Display similar to FuBar