WowAce

Automates bites during the Blood-Queen Lana'thel encounter in Icecrown Citadel

Shows ZoneInfo on the World Map in a perfectly cromulent fashion.

Heal and decurse by clicking on customizable raid/party unit frames

Attach diminishing return icons to unit frames.

A small checklist for raid (de)buffs and who brings what.

Hemlock

Inventory and bank organizer.

GetInLine

An addon to assist with organizing healing in a raid set up.

Tracks the precise arrival & departure schedules of boats and Zeppelins around Azeroth and displays them on the Mini-Map and ...

AspectsBar

Detects specific CDs and spellcasts

SupplyAndDemand

Manages social information with a focus on main-alt associations.

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

MountUp

Teleporters in Suramar? Sure, why not?

Simple quest item bar.

aUF_RangeCheck

BA3_SpellAbilities