WowAce

Enables shift-click copy into the chat edit box for achievement statistics.

Assistace for Blackhand (Mortar warning in P2, custom says for bombs and marks in P3)

Shift-clicking on a user name in chat shows a tooltip with their whois information.

Enigma

Notifies your chat frame of who has cast their Toy Train

autoLFG

Bug fix for the Blizzard calendar -- prevents unexpected window closure while editing events

Unsolicited

Tattles to your default chat frame who has used their taunt nearby

Blocks all whispers except from people in your guild and friends list.

Show everyone how much you care

Locks the chat window tabs to prevent accidental undocking via mouse drag

Adds a report button, segment button and report gui to Skada Bar Displays

A friend in need is a unconversable robot friend.

Provides search functionality to the chatframes

Translates the received text icons {cross}, {skull} etc in your local language for multilingual raids

Track friends / enemies in a convienent window, with optional logging

Adds the ability to send mass mails to guild ranks.

Battle.net point query addon in Chinese realms(中国国服战网点插件)

Caser