WowAce

Speeds up triggering actions such as items or spells by triggering them on key/mouse down rather than release

Displays a reliable cooldown timer for the Shaman Ascendance ability

It's a doodle pad for doodling with doodles.

AuctionSort

FuBar_jabberFu

Replacement for the default nameplates.

Helps you automate selling stuff

Shows a money overview for your current realm in the tooltip on the money in your bags

Automatically invites player from templates.

Helps with interrupt notifications and announcements.

One-click smart mounting.

XArt

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

A library to help with localization of classes.

Show coordinates on minimap

GearRating

Shows the price of a single item in the Auction House.

PreferredItems

Capsule

Spell overlay customization and spell state HUD.