WowAce

Show a texture on demand

wRlog

Loot management tool

Adds an Atlas button to FuBar.

aUF_RangeCheck

InfiniBar-2.0

Display the global cooldown around your cursor. (+ other stuff)

Fires events whenever a raid member "fails".

ComboSounds

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

Fancy up the PlayerPowerBarAlt frame

Calculates incoming damage avoidance and mitigation

A module that lets you find out what today's dailies are without having to visit the quest givers.

Shows activity for hidden ChatFrames by making their tabs flash.

GemList

FuBar_uGuild

Track of your tradeskills across characters, create small buttons for them and track cooldowns.

Simple, nice-looking power bar addon for all classes.

A standalone version of Angry Assignments to create and display personal notes on your screen.

Spyglass