WowAce

Manages the scanning of the auction house in a reliable an efficient manner.

Database of FlightMaster locations for HandyNotes

Reverse Engineering will drill down and search your tradeskills for their elements

Speeds up triggering actions such as items or spells by triggering them on key/mouse down rather than release

Create reagents easily

Broker2FuBar

An extra set of 11x3 buttons, integrated into the default action bar.

A loot distribution addon meant to improve master looting during raids.

Keeps track of honor, PvP statistics, BG Marks, and Arena points.

FuBar_VampwatchFu

Buff reminders and more

Display who crossed the charges on Thaddius

Adds a button to your character and inspect window that shows a summary of gear enchants and gems.

Automagically draw your weapons !

Adds unreal tournament style sounds to PvP encounters.

Data broker for keeping track of your Ankh cooldown.

LibRock-1.0

Heal and decurse by clicking on customizable raid/party unit frames

Customize the appearance of the chat bubbles.

Prompts for canceling of pet battles if no rare pet is found in the opposing team.