WowAce

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

Creates and manages secure Action Buttons

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

Modular casting bar.

Tracks rare drops, including companions and mounts

Myslot is for transferring settings between accounts. Feedback [email protected]

Shared handling of alternate identity data between addons.

Arena unit frames

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

Show item levels in the character frame

Provides one or many frames for dumping text into.

"Debug" code free since '93!

Replacement for the default UI's StaticPopup dialogs.

Restores access to removed interface options in Legion

A library to help with localization of races.

A skinning engine for button-based add-ons.

Simple Map Mod

Adirelle's bag addon.

A library to help with localization of bosses.

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