WowAce

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

Scans the AH and your bank/bags and finds the cheapest way to make your next skill point in your professions

Show helper indicators for units conditions (buffs, states, etc).

Flashes Health bar when life drops under a specified percent.

Auto-assigns raid targets to group member's crowd control abilities

Determines the exact location of an archaeology find from two surveys

Simple and easy to use unit frames.

Tracks buffs/debuffs seen during fights, for post review.

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

ScrubbingUI

Templar is the ultimate Mage Assistant

Muffin

Various libraries based on LCD4Linux, offering users lower-level UI customizations.

Calculates a point value of all stats on an item based on relative stat value

Checks the details of the inspected player's gear for mistakes and questionable decisions

Auto Dinger

Check for flask/food buffs

Adds functionality to show a bar as a deficit

Automatically sends guild recruitment ads to the GuildRecruitment channel.

WoW SYM