WowAce

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

TickTo

LibQTipClick-1.0

Menagerie

Adds a confirmation dialog when crafting Bind-On-Pickup trade skill items

Lute

Spell overlay customization and spell state HUD.

Automatic ammo reloading and selection, with warnings.

FuBar_jabberFu

Debuff Monitor: A Powerful & Configurable Raiding Tool

Shows a frame to track your debuff on Malygos in phase three.

One-click smart mounting.

ERP

On login, displays changes to your guild since the last time you logged in.

Keeps tracks of /rolls.

Displays a grid of guild ranks versus permissions.

A FPS Data Broker plugin.

Allows movement and scaling of class-specific resource displays

Percent

A seperate focus bar, with focus gain prediction and rotation forecast.