WowAce

Gnomish math at its best!

This is an add-on to block incoming guild/party/duel requests (except for friends/party/guild) (previously ASSBlock)

Adds an Atlas button to FuBar.

Adds Buff/Debuff icons to the grid frame.

A simple addon that warns you if your pet isn't attacking while you're in combat.

Displays Currencies as a Data Broker source

Automatically and immediately cancels all in-game cinematics and movies

Resizes Blizzard raid frames, and adds additional options.

GPriceEach

Keeps track of people who have recently sent you messages.

Replaces the SkadaAbsorbs module with one that acts more like SkadaHealing, but includes shields.

Allows for gold tracking across multiple time frames

Notifies you when you get aggro.

GraphLib

Merchant, gossip and taxi tweaking module for TweakHub.

IFrameManager

Status indicator that shows if a unit is hostile (probably mindcontrolled)

TrickOrTreat

My plugins for KuiNameplates

Allows communication to be shared across realm through Battle.net.