WowAce

XArt

Allow rule based automatic rolling on loot.

Add-on that shows which battle pets can be farmed this week

Combat log replacement

Complain about crowd control breaks.

Talented_Data

Sneakily inspect how much gold your mouseover target has made so far.

Displays a reliable cooldown timer for the Shaman Ascendance ability

A customizable casting bar replacement for TBC Classic & Classic WoW

Watch tooltip updates to announce when you find specific objects

Leveling guides for trade skill professions.

Niagara

Dynamically atering layout in raid environment (Tanks, Ranged / Melee DPS, Healers)

Adds an Atlas button to FuBar.

Fires events whenever a raid member "fails".

A Data Broker add-on for quickly switching your specialization with gear set and loot specialization.

Automatic ammo reloading and selection, with warnings.

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

SupplyAndDemand

Tells you who bought your auctions.