WowAce

Menagerie

Paparazzi

Makes tracking reputation much simpler. By InSo(v)nIaX

Communicates with guild members for their positions on the world map

PerfectTargets

LDB data source for reputation monitoring.

Lets you drag UI frames around

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

Adds a Friendly Fire mode and data collection to Skada.

Simple money display for LDB

Show an in combat indicator

A frame with a text that gives you the amount absorb left on target, or in TankMode absorbs left on yourself.

FuBar_KungFu

IDCard

Centralised management hub for small tweak, interface and utility addons.

RotLatency keeps track of your reaction to cooldown expiration.

ActionCombat

Inventory and bank organizer.

Pet Battle Lite Frame

Holy Power, Shadow Orbs, Rogue Combo Points and Monk Chi.