WowAce

Combat log event dispatcher.

Vocal warning for Lava Wave for the Ragnaros encounter

Cataclysm Currency and Honor Calculator.

HatTrick

Make health bars based on 10k health when unit has Finkle's Mixture.

A library to define schemas for Lua types and validate Lua values against those schemas.

Lets you Shift-Click artifact traits to chat

Loooooot!

nanoPlayed

PimpMyProfession The Profession Guide

Avoids a Blizzard UI bug during zoning after a guild roster entry has been clicked.

Tracks Grace and changes color based on the number stacked

Show coordinates on minimap

Show an "alternate power" bar for boss encounters.

Shows Ctrl/Alt/Shift indicators in the middle of your screen.

BT_Maggi

Chooses the most expensive quest reward and vendors it when possible

FuBar_FishingFu

Easy access to alts professions

ClosetGnome_OhNoes