WowAce

Officially the original source for where things are in the Broken Isles, in HandyNotes

Provides one or many informational windows with optional interactive widgets.

EBB adds groups of bars to your screen showing you which (de)buffs currently affect your toon or some other units.

A customizable view of friends and guildmates.

Records mail when visiting the mailbox to make keeping track of mail and expiration dates easy.

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

Simple and Advanced combined - Bartender4 ActionBar AddOn

Creates and manages secure Action Buttons

Tracks Raid/Instance/World Boss lockouts for all your characters, daily/weekly quests, currencies, trade cooldowns, and more!

HereBeDragons is a data API for the World of Warcraft mapping system

Replacement for ActionButton_Show/HideOverlayGlow APIs

One large inventory.

Handy notes for your maps

AddOn development framework

From bags we came, to bank we return

Inventory Management with virtual bags divided into sections.

Changes the look of the default UI

Grabs bugs for the bug sack.

Adds countdown voices from Heroes of the Storm to BigWigs for all supported locales.

Adds countdown voices from the heroes in Overwatch to BigWigs.