WowAce

Numerical and graphical display of Combo Points and similar buffs/debuffs. Also tracks Holy Power and Soul Shards.

Archaeology Assistant

A library to help with localization of in-game item sets.

Data Broker Display similar to FuBar

Adds various information based on PeriodicTable to item tooltips.

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

A display for LibDataBroker-1.1

Violation

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

Calculates and shows your TankPoints in the PaperDall Frame.

Display auras on action buttons.

A library to determine estimated range.

Displays Instance Maps

MorgDKP

Show the appearance of an item when you mouse over it

A library to help with localization of factions.

Automatically enables or disables combat logging based on location.

Bulk mail sending made really easy

Tracks vulnerability debuffs on multiple mobs

Rebuff yourself with the mousewheel.