WowAce

LibItemInfo-1.0

Automatically enables or disables combat logging based on location.

Automatically leaves the global channels when inside an instance/raid and restores them when exited.

Show what quests have changed

Show a texture on demand

Mutes various chat related annoyances while in capital cities and instances.

mount and companion manager

Am I locked out? - Displays all RaidIDs for all chars

Angry Assignments

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

An intuitive keybindings library.

Inserts additionnal fonts into SharedMediaLib's storage.

AddOn development framework

Adds countdown voices from Heroes of the Storm to BigWigs for all supported locales.

Adds countdown voices from the heroes in Overwatch to BigWigs.

A library to provide unit-oriented tags to LibDogTag-3.0

Arena unit frames

Adirelle's bag addon.

One large inventory.

The original source for where things are in Pandaria