WowAce

Aggro Warning System for Parties and Raids.

Bag and item management utilities

Reports in the Default Chat Frame how many people does not have Well Fed effect, and who are they

BetterOutbox

A Healing Assignment management addon

SQL-driven database system for Lua

ezIcons

aUF_Banzai

Fizzlebag

Shows the group leader, raid assistants, and master looter in Grid.

TickTo

Destruction Warlock priority module for clcInfo -- Maighurl

Scaffold

Hold a key to temporarily center and magnify the Minimap.

Shows attachment count in Inbox icon.

Adds achievement reminders to BigWigs

Automatically restock items from vendors and your bank

Notifies you when you get aggro.

Helps to track outgoing mails

Hunter 'Misdirection' activity and cooldown monitoring for raids/groups. 'Readiness' aware.