WowAce

Automatically leaves the global channels when inside an instance/raid and restores them when exited.

InfiniBar-2.0

Incoming Heals

Dynamic item DKP calculation

Shows Status Bars that you can drag around and group up for your cooldowns

Display Garrison missons for all Characters

Auto and random summon highly customizable for your pets and mounts, with Data Broker support.

Sorts the Wardrobe

Shows where the equipment of inspected users or yourself is from.

Library handling communcation for Magic* addons

Shows your standings with the factions.

Tracks SendAddonMessage Spam

Keeps track of time played and rested XP across your characters.

Estimated time until current target will die.

Questing minion

Incubator

ItemPriceTooltip

Sphere

TuiRaidTracker

Role playing AddOn that shows extra information about characters as entered by the player.