WowAce

Notifies you of experience gains

DaPortrait

Percent

Shows guild and system message of the day only if either one of them has changed since the last login.

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

Cartographer_NoteTarget

A library to help with localization of Archeology dig sites

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

TrainingWheels

Replacement for WoW's flash/fade functions.

Shows where the equipment of inspected users or yourself is from.

Lag tolerance module for Broker displays.

Adds indicators to the sides of Grid frames.

Transcendence Monitor for Monks

Shows a frame to track your debuff on Malygos in phase three.

TrapBar

Hitman

DKPmon

Quest information

Buff reminders and more