WowAce

Checks your gear before bosses and yells at you if you're an idiot

Simple quest item bar.

Adds your damage to Scrolling Combat Text

A data broker display, that shows one block per plugin.

Detects specific CDs and spellcasts

Tracks SendAddonMessage Spam

Animated target indicator

Helps you decide which ability to use next according to priority you set

InfiniBar-2.0

Tracks skill and tradeskill costs and progressions, as well as trainer locations.

OneBag

Klappa

Adds a button to the quest completion interface which allows you to auto equips selected quest Item after completion

GrindStatus

Lightweight time/date display with optional hourly chime.

Heads-up minimap display

FuBar_VolumeFu

Shows your standings with the factions.

Client for allowing the raid leader to gauge interest on items in a method similar to a ready-check.

Shows Chat as Combat Text