WowAce

A frame designed for each specialization of druid's watching their main power and important buffs/debuffs

Swap a random tabard every time you visit the bank if you are wearing one

Simple and rich Death Knight rune customizations

A lib to manage action bar and timers

ArenaPointer

Expiration

DaPortrait

Automatically equip 'Chef's Hat' if the Chef enters the kitchen (Cooking TradeSkill).

A seperate focus bar, with focus gain prediction and rotation forecast.

NabuFiveSec

A simple addon that warns you if your pet isn't attacking while you're in combat.

Advanced Chat Filtering and Spam Blocking Addon

Opens professions and shows their skill level.

Facilitate better communication for loot councils

Provides the the health and target of by an unit targeted mob (meant to be used for tanks).

Shows missing buffs and handles welfare and deluxe buffs as one (motw/gotw, blessings, etc.). This lets you see when you nee...

Armored man and paper doll durability modifier

A PitBull4 module which shows an arrow that points to raid members

Debuff Monitor: A Powerful & Configurable Raiding Tool

Lists and/or reminds people missing flasks or food buffs at every ready check.