WowAce

Announces interrupts in the chat

TextSpy

FuBar_switcherFu

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

FuBar_ShardCountFu

Helps you automate selling stuff

ScoreSort

FuBar_RicoXPFu

FuBar_NinjutFu

A simple data broker display for current Artifact Power

Prospecting and Disenchanting Aide

Provides buttons and keybinds for raid flare world markers that never stop working mid-session

Displays performance-related stats for shadow priests.

Saves contents of your guild bank and sends/receives updates over the addon channel

Calendar improvements

EUF is an enhance of wow original unit frames, provides hp with both value and %, and optional 3D portrait. Simple and Useful.

BigTrouble

Adds four icon indicators to Grid (top, bottom, left and right).

Monitors AP when dots are applied, clearly showing current vs applied AP levels.

Handles the assignment, coordination, and announcement of many parts of the Lich King encounter in Icecrown Citadel.