WowAce

Tracks rare drops, including companions and mounts

A skinning engine for button-based add-ons.

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

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

Library that handles chat output.

Replacement for the default UI's StaticPopup dialogs.

Simple Map Mod

Inserts some media into LibSharedMedia's storage.

Estimated range display. Type /rangedisplay for config

Parses ToC and adds About panel to Interface options

Enables multi-line/unlimited-length pasting of text or commands into WoW

Another HUD addon

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.

An intuitive keybindings library.

Adds a Button to the Worldmap which toggle Handynotes

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

Replacement for ActionButton_Show/HideOverlayGlow APIs

Creates and manages secure Action Buttons

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...