WowAce

Collects Herbs, Mines, Gas Clouds, Archaeology, Treasure and Fishing locations and adds them to the worldmap and minimap

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

A skinning engine for button-based add-ons.

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

Show item levels in the character frame

Database of item upgrade IDs

Arena unit frames

An intuitive keybindings library.

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

The original source for where things are in Pandaria

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

Replacement for ActionButton_Show/HideOverlayGlow APIs

Adds a Button to the Worldmap which toggle Handynotes

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

Creates and manages secure Action Buttons

Does stuff for sachmo

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

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

Another HUD addon

Estimated range display. Type /rangedisplay for config