WowAce

Enhances the StackSplitFrame with numbered Buttons, a '1-Click Mode' and a 'Auto Split Mode'.

Various libraries based on LCD4Linux, offering users lower-level UI customizations.

Raid level alternative player power warning (Atramedes, Cho'gall, Lord Rhyolith)

T_ItemInfo

cgCrafty

A popup menu containing user-programmable scripts.

Notifies you of experience gains

Client for MagicDKP which handles standby calls and bidding on items.

Monitors the combatlog identifying players from the oposite faction near you.

Lists Pots and Herbs you got on all chars and allows you to specify color coding

Powerleveling guide framework

Makes the Blizzard options frame movable and resizable

FuBar_ExitFu

Capital Cities NPC Browser

Monitor the remaining duration on your Mysterious Eggs and other perishable items.

Provide plenty of links

AutoFIR

oUF element for highlighting debuffs that are dispellable by the player

Adds a couple of graph displays to Skada.

Aperture