WowAce

Replacement for the default UI's StaticPopup dialogs.

Library that handles chat output.

Parses ToC and adds About panel to Interface options

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.

Restores access to removed interface options in Legion

Wowhead Data dump for GatherMate2

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

A library allowing for easy creation of graphs

Arena unit frames

An intuitive keybindings library.

Another HUD addon

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

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

Replacement for ActionButton_Show/HideOverlayGlow APIs

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

Creates and manages secure Action Buttons

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

Shows the possible loot from the bosses

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