WowAce

Party and Raid roster library - one library for any group

Broker launcher that switches specializations when clicked. Also hides spell learned spam.

Insanity resource tracker for shadow priests.

A library to provide tools for formatting money and time.

IDCard

Enable/Disable addons for your character in game

Retooled Professions

Database of your death locations for HandyNotes

Upcoming events.

Merchant, gossip and taxi tweaking module for TweakHub.

Save and load macros.

Communicates with guild members for their positions on the world map

Collects and displays census information. This AddOn is licenced under the GNU GPL, see GPL.txt for details.

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

FuBar_BongosFu

Saves who searches in a favorites list.

Privacy2

A frame with a text that gives you the amount absorb left on target, or in TankMode absorbs left on yourself.

Crowd-control monitor

This addon helps with daily quests.