WowAce

A core for your informational plugins to plug into.

Provides shareable notes and other information for your guild, party and raid community.

A collection of useful (guild management) tools and utilities for smarter than average bears.

A lightweight addon that does something.

Tracks the Blood Shield for Death Knights.

Tracks SendAddonMessage Spam

Auto and random summon highly customizable for your pets and mounts, with Data Broker support.

Tracks the current Fear Ward's in the raid or party.

A data broker display, that shows one block per plugin.

Arcana-LFG is a broker plugin to show looking for group information, including call to arms

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

A Simple World of Warcraft Spam Filter!

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

LDB data source for currency flow

Keeps track of space left in your bags.

LDB display of currencies, gold totals and session / daily / weekly statistics for all characters on a server.

LDB data source for Tradeskill Cooldowns

Allows tradeskill usage by clicking items or reagents.

Open those clams (and other containers)

Collects, analyzes and presents information about the virtual economy.