WowAce

Shared handling of media data (fonts, sounds, textures, ...) between addons.

AddOn development framework

Universal Library Stub

Callback handling Library, normally embedded inside other libraries

Grabs bugs for the bug sack.

Toss those bugs inna sack.

Afflictions display and cleaning for solo, group and raid with advanced filtering and priority system.

Compression and Decompression library

Simple and Advanced combined - Bartender4 ActionBar AddOn

Handy notes for your maps

Enables AceGUI-3.0 widgets for the 5 basic SharedMedia-3.0 types

A modular, lightweight and screen-estate saving grid of party/raid unit frames

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

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

Library that handles chat output.

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

Modular casting bar.

Addon to manipulate the map

Another HUD addon

Postal: Enhanced Mailbox support