WowAce

FuBar_RaidBuffFu

Cartographer_Mining

Adds various hearthing items to AdiBags virtual groups

Displays the time remaining before your (temporary) pet is dismissed.

pDebuffList

Combat log evolved.

Transcendence Monitor for Monks

Pins on the World Map for quests you have not completed yet

Friends & Guild Data Broker plugin.

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

KillingSpree

Shows skills in a tooltip and allow them to be used. Also keeps track of Cooldowns.

Adds the toon name to the alert that your RealID friend has come online.

SmartQueue

Hemlock

Simple quest item bar.

Calculates optimal reforging for given weights/caps.

Bidder

Add-on that shows which mounts can be farmed this week

Saves and restores your action bars.