WowAce

Chat addon, filtering messages and UI changes

Displays information about the current zone on the World Map

A library to provide information about zones and instances.

Animated target indicator

Restores access to removed interface options in Legion

Changes the look of the default UI

A customizable view of friends and guildmates.

Drop the cheapest thing you're carrying

A library to provide a markup syntax

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

Another HUD addon

The original source for where things are in Pandaria

Data Broker Display similar to FuBar

Show item levels in the character frame

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

Remember locations that city guards direct you to for HandyNotes

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.

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

Display Cooldown Count of Spell Icon and Item