WowAce

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

AddOn development framework

Bayi's Extended Questlog

Library providing mappings between trade skill recipes, spells and created items

Makes a sound when your focus starts casting. Use with [target=focus] macros for interrupts (Counterspell, Spell Lock, Wind ...

Improved Questing Experience

Show all the leyline taps in Suramar

Angry Assignments

LiteStep skins for Masque.

Death analysis tool

Display Cooldown Count of Spell Icon and Item

Adds mob patrol paths to your map.

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

Show buffs on nameplates.

Cleans up minimap buttons and makes them accessible through a pop out menu!

Show all the orbs for triggering Kosumoth

Point to quest POIs on your minimap

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

HideTalkingHead

Timers for Buffs, DOTs, CC effects, etc..