WowAce

Database of your death locations for HandyNotes

Allows you to loot BoP items without prompting when not in a group or raid

ImprovedTargetFrame

Combat log replacement

Instant PROC notification

LibRockComm-1.0

A seperate focus bar, with focus gain prediction and rotation forecast.

Provides quick notification (sound and visual) of your tanking status of your current target. Meant for tanking.

Save and load macros.

Aggro Warning System for Parties and Raids.

aUF_Banzai

Smooth combat HUD based on ArcHUD2

MouseLook

Replacement of build-in loot frame

Insanity resource tracker for shadow priests.

A simple addon that warns you if your pet isn't attacking while you're in combat.

Keeps a list of all items you want and shows how much you need.

Auto-reply to people whispering you when you are fighting a boss, and send boss progress. Re-work of SimpleBossWhisperer by R...

Cartographer_Herbalism

It's a doodle pad for doodling with doodles.