WowAce

Printing unknown AddonPrefixes to your chat

Small Diamond Icon Pack for Cartographer

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

Displays your soulshards in better way.

CraftBotFu

Simple LibDataBroker based launcher to toggle MonkeyQuest.

With Mists of Pandaria Blizzard publish all characters from an account unless you disable that 'feature'. This addon warns you.

Inventory Management

DKP ingame management

Displays an estimated time until you're out of mana

Tacticial pet battle information so you can be a Pokemon master

Envenomous

Minimalistic LDB-based friends display

Write event handlers in a simple GUI in-game

Very very simple tooltip

Adds a /rl command to reload the UI

Notifies you of new calendar event invites and reminds of upcoming events on all characters and realms

Logging utility for duels

Library to handle and store information about frame that are possible targets to anchor other frames to.

Hides the Order Hall Command Bar