WowAce

For Developers (of Addons which uses LibWho-2.0): show queues and queries in realtime

A library for PvP and Battlegrounds

Tracks whispers and conversations

Manages the SavedVariables of your addon with a layered hierarchy of settings.

NameTagToggle

Hitman

Displays info about who rolled Need/Greed/Pass on items that are currently rolled for

ImprovedTargetFrame

Adds on-screen buttons for the farming tools and seeds.

FuBar_uFriends

Taggle

Pet Theory

Library to help with querying unit talents.

StitchUI

Creates new chats with guild channel functionality

Building a Better Mailbox

Allows for easy congratulating when someone earns an achievement.

Allows you to browse your clients database

opens/closes all bags when at merchant (instead of only the backpack)

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