WowAce

Allows frames to be dragged around, without permanently changing their position.

Hitman

FuBar_NetStatsFu

Adds Friend and Guild options to the context menu of player units.

Adds a button to your character and inspect window that shows a summary of gear enchants and gems.

Adds a button to the quest completion interface which allows you to auto equips selected quest Item after completion

Enables the filtering of items when you visit a vendor

InventoryLib

EyeCandy

eePanels2

Draws some lovely 3D portraits in the standard Blizzard artwork.

Manages the scanning of the auction house in a reliable an efficient manner.

FuBar_MiniPerfsFu

MessageEvent

Quest helping: fetching items to use, that sort of thing.

What did you just loot?

RapidCast

Evaluates your gear

Prompts for canceling of pet battles if no rare pet is found in the opposing team.

XP and Reputation bars