WowAce

Scan for rare mobs so you can find them and their loot

Another HUD addon

The original HandyNotes source for where things are in Battle for Azeroth

The original source for where things are in Pandaria

Show what quests have changed

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

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

In-game EPGP guild helper, supports standby, main/alt shared pools, minEP, offpecGP. Fixed price list with progress multiplier.

Provides access to all Portal and Teleport spells on right click of one button.

Give whispers an instant messenger feel.

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

Show the transmog appearance of an item when you mouse over it, and shows collection-status in bags, shops, and elsewhere. Works on transmog, mounts, pets, and decor.

Changes the look of the default UI

Tracks rare drops, including companions and mounts

Show a texture on demand

Auto repair + shows durability.

Tracks herbs/ore/items that can be broken into component pieces

Afflictions display and cleaning for solo, group and raid with advanced filtering and priority system.

In World of Warcraft healers have to die. This is a cruel truth that you're taught very early in the game. This add-on helps you influence this unfortunate destiny in a way or another depending on the healer's side...

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