WowAce

A modular, lightweight and screen-estate saving grid of party/raid unit frames

Adirelle's bag addon.

A library to help with localization of talent trees.

Allows you to view all items from all your characters on the same account, when-ever and where-ever you want.

Uses various methods to scan your surroundings for rare or specified NPCs.

In World of Warcraft healers have to die. This is a cruel truth that you're taught very early in the game. This add-on helps you influence this unfortunate destiny in a way or another depending on the healer's side...

A lightweight, flexible, multi-target threat meter.

Adds an addon manager in game via the 'Addons' menu. Special support for multi-part addons. Based on rMCP by Rophy.

Remember where rares were

Estimated range display. Type /rangedisplay for config

Another HUD addon

Test whether the player can really dispell a buff or debuff, given its talents.

Dog-themed unit frames. Woof. Arf. Yip.

Postal: Enhanced Mailbox support

Where the Lost and Found objects are

One large inventory.

Improved Questing Experience

Move those blizzard windows

Max Camera

Sells all junk in your inventory at once.