WowAce

An addon to keep track of your earned artifact power and present you relevant information.

Stripped down version of the well known Minimalist

A library for sending addon messages over the battle.net chat system

MacroMagic saves space in your addons by consolidating a common set of commands into a single shortcut.

Counts how many Swarm Scarabs that are alive in the Anub'arak encounter

Runs pool-fishing contests

Saves your watched quests and achivement between sessions

Make health bars based on 10k health when unit has Finkle's Mixture.

Says if anyone got too many stacks of Inoculated.

Toggles quests and achievements tracking during boss encounters

Waypoints for Pandaria Treasures

When a new icon ("vignette") shows up on the minimap, shout about it

"This addon will update your macros to always point at your tank"

Runs guild pool-fishing contests

Let everyone know how much fail they are

ScrubbingUI

Templar is the ultimate Mage Assistant

Polaroide

BhLogros

Helps players with those tricky timed achievements