WowAce

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

Creates and manages secure Action Buttons

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

Another HUD addon

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

Modular casting bar.

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

A skinning engine for button-based add-ons.

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

"Debug" code free since '93!

Restores access to removed interface options in Legion

A library allowing for easy creation of graphs

Adds a Button to the Worldmap which toggle Handynotes

Postal: Enhanced Mailbox support

Modular damage meter.

Wowhead Data dump for GatherMate2

Shared handling of alternate identity data between addons.

Tracks rare drops, including companions and mounts

Shows the possible loot from the bosses

Library of compressed itemid sets.