Flourish displays finished (not yet turned in) quests as part of the current experience gained

Deus Vox Encounters (DXE) is a boss and PVP mod inspired by RDX.

Let's you know when your work is complete!

Allows tradeskill usage by clicking items or reagents.

iShadow adds shadowed border to the UI window.

Tongues

Tracks raid, loot and attendance

Quick Auctions is an auction tool to help speed up auctioning large quantities of items.

Reminds rogues when their poisons are about to expire.

Calculates and shows your TankPoints in the PaperDall Frame.

GupCharacter makes the original blizard frame a bit bigger.

Icetip is a simple, customizeable and powerful tooltip addon.

Emergency Taunt Button

Shows your current caster stats (spellpower, critchance, haste, hit, mp5). By TheVaan

Allows you to easily configure your MonkeyQuest with a nice config window.

Play a virtual piano when you are bored.

Data Broker Display similar to FuBar

Ranks gear according to customizable stat weights.

Allows easy modification of displayed AH deposit values for Private Servers.

Monitors Death Knight runes.

Open those clams (and other containers).

Displays item durability and repair cost.

Inform the raid when someone uses a cooldown

Gives detailed descriptions of particular localities, as zones or instances, and provides optional TomTom integration.