WowAce

Adds spec switching support to individual AceDB-3.0 databases.

Makes the default frames moveable via simple drag and drop

Simple and Advanced combined - Bartender4 ActionBar AddOn

Handy notes for your maps

Simple AceGUI3 dropdown item classes for font/statusbar/sound/etc.

Displays additional information for Mythic Keystone dungeons

Library that handles chat output.

Give whispers an instant messenger feel.

A modular, lightweight and screen-estate saving grid of party/raid unit frames

Replacement for the default UI's StaticPopup dialogs.

Parses ToC and adds About panel to Interface options

Collects Herbs, Mines, Gas Clouds, Archaeology, Treasure and Fishing locations and adds them to the worldmap and minimap

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

Collects Herbs, Mines, Gas Clouds, Archaeology, Treasure and Fishing locations and adds them to the worldmap and minimap

The original source for where things are in Pandaria

Show item levels in the character frame

Another HUD addon

Ackis Recipe List is an addon which will scan your trade skills and provide information on how to obtain recipes. It works fo...

Wowhead Data dump for GatherMate2

Allows you to view all items from all your characters on the same account, when-ever and where-ever you want.