WowAce

A Data Broker display for combat statistics.

Keeps track of space left in your bags.

Tracks skill and tradeskill costs and progressions, as well as trainer locations.

Inventory and bank organizer.

Volume control panel.

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

Collects, analyzes and presents information about the virtual economy.

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

Allows you to browse your clients database

Broker plugin to display player orientation

A UI for searching the guild roster.

LDB data source for herb, ore and skinning node data

Simple display and management of Away / AFK / Busy / DND status via broker or minimap

Provides a quick display for the LFG Call to Arms

Tells you the Tiller, what food they like, and if you have fed them today for the quests A Dish for ...

A customizable view of friends and guildmates.

Gives detailed descriptions of particular localities, as zones or instances, and provides optional TomTom integration.

LDB data source displaying rested XP for whole account

A volume control for Data Broker.

Highly-configurable shield / absorb tracker.