WowAce

Keeps track of group members and keeps an up-to-date cache of their specialization and talents.

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

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

The original HandyNotes source for where things are in Battle for Azeroth

Database of item upgrade IDs

Library that handles chat output.

Officially the original source of knowledge of where things are in Draenor during Warlords, in HandyNotes

Replacement for the default UI's StaticPopup dialogs.

Parses ToC and adds About panel to Interface options

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

Another HUD addon

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

In World of Warcraft healers have to die. This is a cruel truth that you're taught very early in the game. This add-on helps you influence this unfortunate destiny in a way or another depending on the healer's side...

Modular damage meter.

Replacement for ActionButton_Show/HideOverlayGlow APIs

Library to check whether an item is equipable / appropriate for a given class

Adds a Button to the Worldmap which toggle Handynotes

Estimated range display. Type /rangedisplay for config

Shows the possible loot from the bosses

Inserts some media into LibSharedMedia's storage.