WowAce

Hotkey interface for spells, macros, other clickables.

Audible Alerts for self-gain, self-lost, any-gain, all-lost of statuses.

Show an in combat indicator

Library to provide non-explicit cooldown tracking and callbacks.

Fancy up the PlayerPowerBarAlt frame

Powerleveling guide framework

Keeps tracks of /rolls.

Ghost: Pulse

GridAlert

Provides bang-whispers for your professions.

FuriousTask

Tooltip scanning library.

EnvenomX

Displays a grid of guild ranks versus permissions.

A Data Broker add-on for quickly switching your specialization with gear set and loot specialization.

Expiration

Customize the appearance of the chat bubbles.

Destruction Warlock priority module for clcInfo -- Maighurl

An attempt at giving a complete overview of Arena battles

View any characters bank and bags from anywhere. Stores items in Baggins submenu "Anywhere Bags."