WowAce

Violation

Bulk mail reception made really easy

Alternate Power- and Combopoint/SoulShard/HolyPower-bar

Displays Instance Maps

Configurable Castbars

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

A simple combat log that displays events similar to SCT

Prat

Teleporters in Suramar? Sure, why not?

Shows you a much bigger icon selection frame

Create panels for customizing your UI, sucessor to eePanels

Display aura information inside action buttons

Tracks the HoTs you cast.

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

mount and companion manager

Database of Diminishing return categories and general data

MorgDKP

Tracks vulnerability debuffs on multiple mobs

tracks and share quests between your party

Automatically enables or disables combat logging based on location.