WowAce

FuBar_SWStats2Fu

WhiteboardNG

Show who is targeted by at least one enemy, and the casting progress of the incoming spell.

Privacy2

Allows for gold tracking across multiple time frames

Write event handlers in a simple GUI in-game

FuBar_LootTypeFu

LDB display of the players current damage percent modifier

Colors friends/bg score board/who list names by class color

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

EasyDKP

A texture browser for developers and UI modders

agUF style oUF layout

Converts incoming ALL CAPS CHAT into lowercase text.

Makes it very easy to collect rare battle pets.

Baggins_ItemRack

Announce which globule to kill during the Yor'sahj the Unsleeping encounter.

mDarkPact

Raid cooldown assignments for healers

Helps to track outgoing mails