WowAce

Grabs bugs for the bug sack.

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

Simple and Advanced combined - Bartender4 ActionBar AddOn

Library that handles chat output.

Toss those bugs inna sack.

Replacement for the default UI's StaticPopup dialogs.

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

Parses ToC and adds About panel to Interface options

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

Postal: Enhanced Mailbox support

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

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

Modular casting bar.

Chat addon, filtering messages and UI changes

Replacement for ActionButton_Show/HideOverlayGlow APIs

Restores access to removed interface options in Legion

An intuitive keybindings library.

Displays additional information for Mythic Keystone dungeons

Tracks rare drops, including companions and mounts

Creates and manages secure Action Buttons