WowAce

Tracks money/tokens across all your characters; /goldwatch for options.

Continously scan for addons using excessive CPU - especially bursts

Yet another HUD addon

Minimalistic group roll frames.

Notifies your chat frame of who has cast their Toy Train

FuBar_Usage

Steroids

LibMobHealth-4.0

GuildBankMover

Shortens gold output in your chatframes by using the icons instead of names.

A mini-game for World of Warcraft

LibAvion-1.0

Bug fix for the Blizzard calendar -- prevents unexpected window closure while editing events

PVP Timer feed for any Broker display

Customizable text display of character's power.

LibQuickHealth-1.0

Automatically retry teleporting to the instance when the server cannot create a new instance for you.

Provides info about spell teaching items.

Hide frames of people you've ignored.

BlizUF_LMH4