WowAce

Display the global cooldown around your cursor. (+ other stuff)

Engulf

Stats Report

Track any items you want in a tooltip

Display aura information inside action buttons

Suppress chat messages when specified items are looted

StayPygmyfied

Keeps track of your reagents.

Uses linear regression and a log of hitpoint values to estimate how long a boss has left to die and reach execute range.

Tattles to your default chat frame who has used their taunt nearby

Hidden Reputations

Improved Mailbox

Guild Recipe Compiler

Flames anyone who lets his debuff expire on Malygos Phase 3

Corithna's Barpool

Provides additional graph mode report for Acheron

Better Bank Log

AltoComplete

Displays info about who rolled Need/Greed/Pass on items that are currently rolled for

Provides shareable notes and other information for your guild, party and raid community.