WowAce

Communicates with guild members for their positions on the world map

CombatAnnounce

Facilitate better communication for loot councils

PerfectTargets

TrickOrTreat

OneChoice tries to help you reduce quest reward choices down to, ideally, one choice.

Adds achievement reminders to BigWigs

ItemEnchantApplication

Flames anyone who lets his debuff expire on Malygos Phase 3

Creates a broker plugin for all your broker launchers

Keeps a list of all items you want and shows how much you need.

Enables you to see Chinese, Japanese and other languages in game

Hourglass

Small addon to copy chat lines.

Make the unit frame fade if out of range.

FuBar_RecapFu

Keeps track of honor, PvP statistics, BG Marks, and Arena points.

Allows movement and scaling of class-specific resource displays

FuBar_EmoteFu2

Shows at-a-glance what raid buffs/debuffs you have.