WowAce

Shows the number of battle resurrections you have and when the next one will become available during a boss encounter.

Gives equipped and overall iLvl to indicate the quality of a character's gear.

Reduce the chance that talent switch be forbidden.

Adds Name and Buyout Price sort columns to the auction house.

Show a bar indicating the unit's Burning Embers count.

Relegation

SuccessionDKP

Thok Cooldown Rotation

switches Bartender4-profiles when changing spec

Experimental timer library that uses the Animation system as a scheduler.

PimpMyProfession The Profession Guide

Object-orientation library

BigWigs_ThogarLaneColors

Fizzlebag

Adds an inobtrusive circular castbar around the mousecursor, handy for Clique users

Shows attachment count in Inbox icon.

Envenomous

Reminds you to resummon your Ghoul

Easy Button for casting MD/ES/ToT etc on tanks.

Provides accurate, millisecond-level timing.