WowAce

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

A Mount and Companion manager

ImprovedRWF

Mutes various chat related annoyances while in capital cities and instances.

Searches bags/banks of all your characters/guilds.

Target Debuff monitor. Stacking aware, giving current and potential debuff status.

Enhancer

Cartographer_Treasure

Does stuff for sachmo

Open those pesky lockboxes

Apathy skin for Masque.

ItemBonusLib

Detox

Raid loot tracking and text generation

A jukebox for playing wow embedded music.

Library providing mappings between trade skill recipes, spells and created items

FuBar_InnboundFu

Onyx skins for Masque.

Allows you to preview weapon glow in Dressing Room.

cyCircled