WowAce

Archaeology Assistant

AutoMagicly clicks though Daily Quests, and Turns them In.

Plugs classical world style fonts into LibSharedMedia-3.0

Watches your chat, flagging missplled words, and offering correctly spelled suggestions.

EBB adds groups of bars to your screen showing you which (de)buffs currently affect your toon or some other units.

Checks Raid Buffs/Flasks/Consumables. Tunable alerts for misdirects, taunts, cc breakage, rez, dispel and interrupt

Gears skins for Masque.

Rebuff yourself with the mousewheel.

Am I locked out? - Displays all RaidIDs for all chars

Show buffs on nameplates.

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

Adds various information based on PeriodicTable to item tooltips.

Sells all junk in your inventory at once.

Queing of /who and SendWho() queries and a much better interface (see docs), with gurantee to be executed & callback.

Display auras on action buttons.

Keeps account of attendance and loot for raids, parties, bgs, arenas and solo for questing.

Auto repair + shows durability.

Database of Diminishing return categories and general data

Tooltip of awesomeness. Moo. It'll graze your pasture.

Remember locations that city guards direct you to for HandyNotes