WowAce

Toss those bugs inna sack.

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

A library for transmitting and receiving latency information of players.

Postal: Enhanced Mailbox support

Database of item upgrade IDs

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

Library that handles chat output.

Displays additional information for Mythic Keystone dungeons

Chat addon, filtering messages and UI changes

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

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

Makes the default frames moveable via simple drag and drop

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

Replacement for the default UI's StaticPopup dialogs.

Tracks rare drops, including companions and mounts

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

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

Parses ToC and adds About panel to Interface options

Give whispers an instant messenger feel.

Restores access to removed interface options in Legion