WowAce

Dynamically atering layout in raid environment (Tanks, Ranged / Melee DPS, Healers)

Gives detailed descriptions of particular localities, as zones or instances, and provides optional TomTom integration.

Adds a highlight border to items in your MogIt Wishlist, making them easier to see.

BankItemsFu

Adds easier gear switching to FuBar.

TalentWhisper

Tracks profession specific cooldowns and items across all your characters

Vengeance module for Broker displays.

Simple and clean Death Knight displays

A module that lets you find out what today's dailies are without having to visit the quest givers.

Embeddable chat throttling library with traffic shaping and priorities

A Data Broker plugin to show AddOn memory usage.

Displays the zone level ranage of the zone you are in and also gives you a suggest zone and instances to be in.

Automatic ammo reloading and selection, with warnings.

Omniscience

wRlog

A fully featured library tracking all ongoing absorb effects

Automatically invites player from templates.

Expiration

Displays info about who rolled Need/Greed/Pass on items that are currently rolled for