WowAce

Additional information about player spells.

Libra

Provides data about all artifacts in the player's possession.

LibItemInfo-1.0

A powerful, comprehensive utilty for displaying graphics and information based on buffs, debuffs, and other triggers.

AddOn development framework

A simple slash-command-based addon for querying item information from the Blizzard servers via ItemIDs and SpellIDs.

Records Damage and Healing for Graph Based Display.

Simple and Advanced combined - Bartender4 ActionBar AddOn

Displays additional information for Mythic Keystone dungeons

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

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

Modular damage meter.

Handy notes for your maps

Where are the hidden treasures in Battle for Azeroth? Show in HandyNotes

Tracks rare drops, including companions and mounts

Inserts some media into LibSharedMedia's storage.

Shows the possible loot from the bosses

"Debug" code free since '93!

Tooltip scanning library.