WowAce

Replacement for ActionButton_Show/HideOverlayGlow APIs

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

An intuitive keybindings library.

Creates and manages secure Action Buttons

Simple Map Mod

Show item levels in the character frame

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

Does stuff for sachmo

"Debug" code free since '93!

Provides one or many frames for dumping text into.

A library to help with localization of in-game subzone names.

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...

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

Shared handling of alternate identity data between addons.

Restores access to removed interface options in Legion

A library to help with localization of the output of UnitCreatureType.

Adirelle's bag addon.

A skinning engine for button-based add-ons.

A library to help with localization of bosses.

Replacement for the default UI's StaticPopup dialogs.