WowAce

iTargetingFrames

User-configurable protection for your inventory. Automatically buys back mistakenly sold items.

Skills plugin for any DataBroker display.

Meeuuuh

Overlays Archaology digsite icons on the flightmap

Displays reagent count on spell action buttons

A simple Fubar plugin for Cartographer_Routes to quickly show/hide routes in the current zone

Adds indicators to the sides of Grid frames.

Plays amusing sounds whenever you skin a mob

Hides MicroButton Alerts

oUF layout looking like ag_Unitframes and Grid.

SpellWatch

Out of Mana bar.

BagPress

Save and send chat messages to many channels. Allows quick item and profession linking within your messages.

Automatically switches Profiles of addons when changing spec

Percent

Zone text Data Broker plugin.

TalentWhisper

Adds filtering based on your known professions.