WowAce

Bulk mail sending made really easy

In-game theorycraft. Calculates actual damage/healing based on gear, talents and buffs.

A library to provide unit-oriented tags to LibDogTag-3.0

Where the lore is at

A library to provide a markup syntax

Item stat breakdown, analysis and comparison

Teleporters in Suramar? Sure, why not?

Create panels for customizing your UI, sucessor to eePanels

Am I locked out? - Displays all RaidIDs for all chars

Addon to manipulate the map

Point to quest POIs on your minimap

Automatically turns on the combat log for selected raid and mythic+ instances.

Minimap addon of awesomeness. *chewing sound*. It'll nibble your hay pellets.

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

Numerical and graphical display of Combo Points and similar buffs/debuffs. Also tracks Holy Power and Soul Shards.

Displays the remaing cooldown of the action you tried to use

Lightweight but powerful auction house interface

Improved Questing Experience

Configurable Castbars

Bayi's Extended Questlog