WowAce

A library for manipulating UTF-8 strings

Database of Diminishing return categories and general data

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

A library to provide information about zones and instances.

Libra

LibItemInfo-1.0

Uses various methods to scan your surroundings for rare or specified NPCs.

an embeddable library providing an abstraction layer for tracking and querying Blizzard's Nameplate frames with ease and effi...

Grabs bugs for the bug sack.

Records Damage and Healing for Graph Based Display.

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

Queing of /who and SendWho() queries and a much better interface (see docs), with gurantee to be executed & callback.

Additional information about player spells.

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

Handy notes for your maps

Modular damage meter.

Displays additional information for Mythic Keystone dungeons

Simple and Advanced combined - Bartender4 ActionBar AddOn

A framework for chat ehancement modules.

Shows the possible loot from the bosses