WowAce

Displays bars depending on your professions

Welfare Epics

FuBar_FuzzyClockFu

Data broker for keeping track of your Ankh cooldown.

Prompts for canceling of pet battles if no rare pet is found in the opposing team.

Display an arrow that points to a raid/party member anchored to raid frames

Library to help with querying unit talents.

Shows who controls Wintergrasp and the time until the next battle.

Adds pipes which can control arbitary other statuses (like toggle status on key or "in combat"-state).

Allows combined aura detection. motw + gotw, all 4 mage int buffs, etc. in one status.

Keeps track of resurrection spells cast in a group

Provides information about the player's bodyguard.

A 'channeling spell'-tracking addon for Affliction Warlocks. Drain Soul, Drain Life/Harvest Life and Malefic Grasp.

Posts a BigBrother-QuickCheck to the raid-channel when a readycheck is started

Provides extended aura status settings.

Replacement for the default nameplates.

Voyeur

Handles the assignment, coordination, and announcement of many parts of the Lich King encounter in Icecrown Citadel.

Instant PROC notification

A UI for searching the guild roster.