WowAce

Shows mana usage as a percentage in a spells tooltip.

Tools for MultiBoxers or Group questing/leveling

Enhancer

Adds party/raid role icons in useful places

Collect data about you myth+ challenges

Keeps account of attendance and loot for raids, parties, bgs, arenas and solo for questing.

Insanity resource tracker for shadow priests.

Displays online guild mates.

RootsBidder

FuBar_AnkhTimerFu

A library to provide a clean dropdown menu interface.

Questing minion

Role playing AddOn that shows extra information about characters as entered by the player.

Tracks the current Fear Ward's in the raid or party.

Add-on that shows in a unit tooltip window a number of killed mobs of the same kind

This will keep track of how much you have paid per item in your inventory. Only one of (Auctionator, Auctioneer, AuctionLite,...

Detects specific CDs and spellcasts

A lightweight addon that does something.

Static library of wow map data

Hemlock