WowAce

Automagically draw your weapons !

Notifies the raid when someone is Dazed.

ezIcons

Add-on that shows in a unit tooltip window a number of killed mobs of the same kind

Automatically restock items from vendors and your bank

Resizes Blizzard raid frames, and adds additional options.

A helper addon for the achievements "Let It Snow", "Fistful of Love", "Shake Your Bunny-Maker", "Check Your Head", and "Turkey Lurkey"

FuBar_WintergraspFu

Allows custom-triggered boss mod timers to be created

Seraphim Raid Tracker

Adds AFK status to Grid frames.

Notifies you of new calendar event invites and reminds of upcoming events on all characters and realms

LDB data source displaying character stats

Melee stats Data Broker plugin.

Show a rough range indicator

Reports the total threat on a mob at the end of combat.

Party and Raid roster library - one library for any group

BangItHarder

PowerPoint goodness for your addon

Selectively loots your fishing catches.