WowAce

GUI Configuration Library

Facilitate better communication for loot councils

RaidHelper

SmartyCatManaBar

Right-click on minimap blips to open a targeting menu (out of combat).

Splut

Selectively loots your fishing catches.

View all your Auctions on any DataBroker display.

Keeps track of gold and cash flow across multiple characters

ShadowGreenLight helps you decide if recasting SWP/Corruption is worthwhile

Target assistance by automatic rewriting of macros

Shows current/dot cast haste values

Combine

Tankalyze

Allow rule based automatic rolling on loot.

Considers an item against all the items you have to determine whether or not it is an upgrade

Helps to track outgoing mails

EUF is an enhance of wow original unit frames, provides hp with both value and %, and optional 3D portrait. Simple and Useful.

Cryolysis

Keeps track of healing spells cast by everyone in a group.