WowAce

Helps to track outgoing mails

Sneakily inspect how much gold your mouseover target has made so far.

Poppins

Mute error messages of N next spell cast.

nRaidTracker

PiraPlex

Small Box Icon Pack for Cartographer

Records mail when visiting the mailbox to make keeping track of mail and expiration dates easy.

Broker launcher that switches specializations when clicked. Also hides spell learned spam.

Provides quick notification (sound and visual) of your tanking status of your current target. Meant for tanking.

Helps you see the Halion's Corporeality during phase 3

Allows movement and scaling of class-specific resource displays

Tracks Black Market Auction House auctions.

Tool for easy task assignments in raids.

Drops the least valuable item in your bags to make space.

IFrameManager

Provides extended aura status settings.

ComboSounds

Automatically switches Profiles of addons when changing spec

Allows communication to be shared across realm through Battle.net.