WowAce

Shows simple Buttons for your Cooldowns :)

Configurable Castbars

Reports in raid chat whenever a raid member "fails." /EnsidiaFails to configure.

Create panels for customizing your UI, sucessor to eePanels

Marks the locations of Hallow's End candy buckets on the worldmap and minimap.

Redirect character errors, system messages and information messages.

GrindStatus

Checks your gear before bosses and yells at you if you're an idiot

Displays the remaing cooldown of the action you tried to use

Auto repair + shows durability.

A library to help with localization of factions.

Keeps track of HoTs, DoTs, Buffs and Cooldowns. With audio and text alerts to refresh them.

Prat

Manufac

Quest History tracker and shows lists of quests in each category

Sells all junk in your inventory at once.

XRS

CandyBar style cooldown display

Track all threat redirection ability transfers and cooldowns (Misdirection and Tricks of the Trade).

Regain that wasted space!