WowAce

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

Mode7Test

The ultimate in lazy Ulduar raiding

Locks the chat window tabs to prevent accidental undocking via mouse drag

Automatically accepts and turns in the Holiday "fly around the world" quests.

Toggle addon configuration mode.

AnalogClock

FuBar_EpicCountFu

Adds tooltip for debuffs (and other things? you found out: no).

Prints combat duration to chat after each fight

SalvationKiller

RepWatch

Lightweight time display, with micro menu and memory usage tooltip.

Auto sizes frame layout depending on group/raid size

Keeps track of your reagents.

Hides the Order Hall Command Bar

Adds cooldown timers to your trinket procs

obRaidAssist

Makes it very easy to collect rare battle pets.

Shows the Guild Achievements Points and Members in the tooltip