WowAce

Combat log replacement

Helps you keep track of your experience.

ImprovedTargetFrame

SupplyAndDemand

SalvationKiller

BananaBar2

On login, displays changes to your guild since the last time you logged in.

Keeps a list of all items you want and shows how much you need.

BanzaiLib

Cartographer_ExtractGas

WF3sec

Broker object for oQueue.

Puts a timer in /yell when you get Unbound Plague during the Heroic Professor Putricide encounter

ClassColors

Automatically sells low quality gray items to the vendor.

A library to try to guess a level of a player.

Displays the zone level ranage of the zone you are in and also gives you a suggest zone and instances to be in.

Notifies you of experience gains

AnchorsAway

Library for tracking cooldowns of other players