WowAce

A collection of useful (guild management) tools and utilities for smarter than average bears.

Instant SLAM! notification

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

A Library for stat conversion, calculation and summarization.

Manages tracking of raid attendance, loot, and more.

Spyglass

Tracks the precise arrival & departure schedules of boats and Zeppelins around Azeroth and displays them on the Mini-Map and ...

Tells you which blob to kill at the Yor'sahj encounter in Dragon Soul.

Tells you if you're buffed

Parkour puzzles throughout the world.

Reforges stuff

oUF element for highlighting debuffs that are dispellable by the player

Shows the spec of people around you in the tooltip.

Automatic Refilling of User Defined Items

Keeps track of your reagents for buffing.

Alternate Rune Display

A volume control for Data Broker.

Sheppard

AVR Encounters

Enhances the StackSplitFrame with numbered Buttons, a '1-Click Mode' and a 'Auto Split Mode'.