WowAce

An advanced in-game addon control center, which combines Categoring, Searching, Loading and Setting of wow addons all together.

EnchantBotFu

Adds a color option for outgoing whispers.

Avoids a Blizzard UI bug during zoning after a guild roster entry has been clicked.

Always shows the Blizzard Raid Frame

Enables autolooting when you start fishing and disables it afterwards.

RollWatcher

BuffAllReady

Magnet

Notices whenever the "Load out of date AddOns" setting has been disabled, and offers to re-enable it and reload the UI for you.

Raid flares without problems with UI taint and errors, using mechanisms introduced in patch 4.3

Manikin

bgsounds

cLayout

Automates sending/accepting group invites in several different situations.

In-game Loot Factor (DKP) comparisons for Juggernaut

Raid warnings and extra awareness for the Algalon encounter

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

Easily send items via COD

ScrollingCombatText Plugin for Hermes