WowAce

Simple Bars for your Shaman's weapon buffs and shield spells.

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

A Perl layout with oUF.

Right-click on minimap blips to open a targeting menu (out of combat).

Handles the assignment, coordination, and announcement of many parts of the Lich King encounter in Icecrown Citadel.

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

Automatically invites player from templates.

Displays Currencies as a Data Broker source

FelwoodFarmer

Complain about crowd control breaks.

A PitBull4 module which shows an arrow that points to raid members

Adds your damage to Scrolling Combat Text

Library to help with querying unit talents.

FuBar_RicoXPFu

Customize the appearance of the chat bubbles.

SmartyCat

Adds a highlight border to items in your MogIt Wishlist, making them easier to see.

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

RotLatency keeps track of your reaction to cooldown expiration.

cgCrafty