WowAce

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

Shared handling of media data (fonts, sounds, textures, ...) between addons.

Set the clicking action for Grid buttons

An easy-to-follow guide for visiting all of the Lunar Festival Elders.

Creates new chats with guild channel functionality

NextStep

FuBar_NinjutFu

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

Prints a message in your default chat frame when someone in your group gains an aura.

Hemlock

Lists Pots and Herbs you got on all chars and allows you to specify color coding

Shows you which bosses you've killed next to the raid finder frame.

CharScanner scans Basic Character Data, Talent Specifications, Equipment, PvE/PvP Achievements, PvE Boss Kill Statistics and ...

BankItemsFu

Lag tolerance module for Broker displays.

Adds options to create customized layouts from within grid.

Accelerates Camera Zooming

PoisonMenu

Watch tooltip updates to announce when you find specific objects

Lets you drag UI frames around