WowAce

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

ItemPriceTooltip

Adds your name to chat messages

Add item levels to Inventorian

Keeps track of current money and all your characters on one realm.

Proximo

Provides quick access to information on your group and their equipment, enchant and gem choices.

CandyBar style cooldown display

Automatic Refilling of User Defined Items

Role playing AddOn that shows extra information about characters as entered by the player.

View an image of your guild vault from anywhere.

Broker plugin to display player orientation

Mutt (Macro Update Target Tool) provides slash-commands that can patch the predefined targets in your macros.

Shows the mirco menu and game menu in a clickable broker tooltip.

Highly-configurable shield / absorb tracker.

Adds unreal tournament style sounds to PvP encounters.

In-game EPGP guild helper, supports standby, main/alt shared pools, minEP, offpecGP. Fixed price list with progress multiplier.

Prat

HUD that you can tweak the way you want.

XRS