WowAce

Baggins_ClosetGnome

Lute

Dailies Quest Tracker

Adds indicators to the sides of Grid frames.

Checklist and notes addon.

Adds your damage to Scrolling Combat Text

BossWhisperer

FuBar_jabberFu

Facilitate better communication for loot councils

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

Saves Auction House search queries.

Deformat

A lib to manage action bar and timers

OneBag is a replacement for the default game bags that combines all the bags into one frame.

A FuBar plugin for MagicMarker

CatPoints

Mob respawn timers

Expiration

Does a /who search of multiple dungeons.

Keeps track of gold and cash flow across multiple characters