WowAce

Toss those bugs inna sack.

A library allowing for easy creation of graphs

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

Scan for rare mobs so you can find them and their loot

Postal: Enhanced Mailbox support

Database of item upgrade IDs

Simple AceGUI3 dropdown item classes for font/statusbar/sound/etc.

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

Library that handles chat output.

Modular casting bar.

Chat addon, filtering messages and UI changes

Restores access to removed interface options in Legion

Replacement for the default UI's StaticPopup dialogs.

Displays additional information for Mythic Keystone dungeons

Tracks rare drops, including companions and mounts

Parses ToC and adds About panel to Interface options

The original source for where things are in Pandaria

Show item levels in the character frame

Makes the default frames moveable via simple drag and drop

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