WowAce

opens/closes all bags when at merchant (instead of only the backpack)

A DPS Data Broker plugin.

Eliminates the spam from the chatframe and sums it up in a broker plugin.

Buffalo2

SurgeonGeneral Listen CLient

ArenaPointer

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

Library to help with querying unit talents.

Vengeance module for Broker displays.

Fancy up the ExtraActionButton frame

Creates a broker plugin for all your broker launchers

Keeps track of gold and cash flow across multiple characters

AnchorsAway

Dailies Quest Tracker

Note + rep tracking for players, with guild data sharing.

Lets you drag UI frames around

A plugin for OneBag to make your keyring the same texture as OneBag/Bank.

Gives equipped and overall iLvl to indicate the quality of a character's gear.

Shows a circle on the minimap to indicate spell range

Announces results of readychecks to the raid/party, installs "/rc" alias, shows rc timer bar