WowAce

Tell you where all the daily elite pets are

FuBar_TransporterFu

Displays an alert whenever you loot an item for the first time.

LilSparky's Workshop mod for Trade Skills

Raid Cooldowns

DogChow

Battleground Timers in a HUD around the Blizzard BG status

Tankalyze

Database of Mailbox locations for HandyNotes

AnchorsAway

A volume control for Data Broker.

Displays the time until the next battle and more.

Nvp

Prints a message in your default chat frame when someone in your group gains an aura.

QuestAnnouncer

OneBag

Tools for MultiBoxers or Group questing/leveling

A FuBar plugin to show Recount.

Add-on that allows you to setup and quickly switch between different profiles of your action bars

StatStain