WowAce

Give whispers an instant messenger feel.

Enables AceGUI-3.0 widgets for the 5 basic SharedMedia-3.0 types

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

LibDataBroker-1.1

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

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

A library for transmitting and receiving latency information of players.

Library providing multi-column tooltips.

Adds spec switching support to individual AceDB-3.0 databases.

Show item levels in the character frame

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

The original source for where things are in Pandaria

Wowhead Data dump for GatherMate2

Restores access to removed interface options in Legion

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

Library that handles chat output.

Officially the original source for where things are in the Broken Isles, in HandyNotes

Modular casting bar.

Replacement for the default UI's StaticPopup dialogs.

Another HUD addon