WowAce

Point to quest POIs on your minimap

Displays the locations of the chests for the Treasure, Treasure Everywhere achievement

Shows your standings with the factions.

HUD that you can tweak the way you want.

CandyBar style cooldown display

PT3Browser

Simple Spell Alert

Displays item durability and repair cost.

Regain that wasted space!

MiniPet, Always keep your little companion with you, based on the work of Carra.

Manufac

Test whether the player can really dispell a buff or debuff, given its talents.

A replacement tradeskill window

FuBar_TrainerFu

One large inventory.

Inspects all members of raid and saves in database, as well as lists people's dkp values

Display Garrison missons for all Characters

Compact rune and proc display for Death Knights.

Angry Raid Points

Allows the user to preview and track their progress in the collection of various transmogrification appearance sets