WowAce

Enable/Disable addons for your character in game

Prospecting and Disenchanting Aide

Simple display and management of Away / AFK / Busy / DND status via broker or minimap

ItemSync the happy item gatherer and toolkit.

Target Debuff monitor. Stacking aware, giving current and potential debuff status.

Healer gear benchmark

MAcon

Set the clicking action for Grid buttons

Adds four icon indicators to Grid (top, bottom, left and right).

Allow rule based automatic rolling on loot.

An auction house AddOn to make the life of each fence easier.

Collect data about you myth+ challenges

Displays reagent count on spell action buttons

Shows the health of the player's current bodyguard.

Provide plenty of links

CharScanner scans Basic Character Data, Talent Specifications, Equipment, PvE/PvP Achievements, PvE Boss Kill Statistics and ...

FuBar_ButtonSmashFu

Gives detailed descriptions of particular localities, as zones or instances, and provides optional TomTom integration.

Heads Up Display with Player and Target Info

A filter tool for blizzards TradeSkillUI