WowAce

Raid Frames using the oUF framework.

Prompts for canceling of pet battles if no rare pet is found in the opposing team.

SRA

A clone of the FailBot mod. Announces raid member failures such as "Player1 fails at frogger"

Keeps track of space left in your bags.

Allows you to prevent addons from sending and receiving messages.

Fancy up the PlayerPowerBarAlt frame

Monitors the combatlog identifying players from the oposite faction near you.

Shows optimal target to use various area healing spells

For Developers (of Addons which uses LibWho-2.0): show queues and queries in realtime

FuBar_uGuild

Healer gear benchmark

Manages the SavedVariables of your addon with a layered hierarchy of settings.

CCBreaker

Square Minimap and more

Creates virtual cyphered chat channels over guild addon communication channel.

Gives detailed descriptions of particular localities, as zones or instances, and provides optional TomTom integration.

Fixes strata bugs in UI windows

Enables user defined sounds for Party, Guild, Raid and Custom Channel chat messages.

WhoDrop