AddOn that alters or enhances some aspect of the game's interface. Mods can perform a wide variety of tasks, including adding new buttons to the screen, altering the built-in player and party frames. In extreme cases, mods completely supplant the standard game's interface, usually offering more advanced functionality.This is a list of some that I find quite critical
About WeakAuras 2
WeakAuras is a powerful and flexible framework that allows you to display highly customizable graphics on your screen to indicate buffs, debuffs, and a whole host of similar types of information.
Great link for all profiles types is on
ElvUI is a full UI replacement. It completely replaces the default Blizzard UI at every level with a new and better interface.
It has multiple addons and plug-ins integrated into it, such as Dominos action bars and TidyPlates.
As such, you’ll only ever have to update ElvUI and not worry too much about its individual components.
This UI will arrange your interface to be more flexible and practical.
A Nice how to use is: