RillyCleanUI

This addon is a modern update to the default UI, adding things such as 3D potraits and removing clunky artwork elements such as action bar borders. It skins default UI frames through small bits of efficient code and texture replacement. This means that if you come from a more default UI, no additional setup or key-rebinding will be required.

Note: For a more complete experience, download the Textures and Fonts pack.

Key features:

• Removes the bulky artwork from the action bars and replaces the button artwork with much cleaner and more simple, modern textures. Will also skin the buttons if you use Dominos or Bartender4.
• Allows moving the action bars vertically, allowing the standard action bars to replace your complicated WeakAura setup for tracking CDs if you want, or to be moved to the usual bottom position to make room for that WeakAura setup.
• Enhances the default castbar in appearance, and allows you to set the offset of it from the top of the action bars.
• Optionally show a small icon for your loot spec in your player frame, so you don’t accidentally loot the Great Vault or your mog run boss in the wrong spec.
• Anchors tooltips to your cursor when out of combat, otherwise putting them in the usual bottom corner spot.
• Comes with fonts that make the game feel a bit less robotic and more fun, including a much cooler damage font.
• Allows customisation of some nameplate options, such as showing level, abbreviating NPC names, and class colouring the name text of friendly players.
• Allows hiding Alt Power or Stance bars if you wish.
• Some quality of life improvements for PvP, such as tab targeting only choosing players, a timer for your arena queue, and a display of the dampening %.
• If you’re a Mythic+ player, it will put your keystone in for you automatically.
• Configure UI elements the way you’re used to from using the default UI. Right click and unlock player frames, configure nameplates/action bars in the usual spot in Game, use Leatrix Plus to manage your frames accross account, and so on.
• Everything is global, so no need to reconfigure for every single character you log into, or even other servers.
• Contains a matching theme for sArena
• Provides bar textures and fonts used in lib shared media so you can use them in other addons for a more consistent feel.
• And more…

Retail:

Classic:

Recommended Classic Addons:

Dominos

Threat Plates

Details!

SexyMap

Questie

Prat

Leatrix Maps

Leatrix Plus (mostly for moving default frames globally)

A thanks to many addons for inspiring this and making coding this a lot easier by providing a good base for some of the improvements, textures and etc. I will mention those addons by name below.

– SUI (https://www.wowinterface.com/downloads/info24007-SUI.html)
– MiirGUI (https://www.wowinterface.com/downloads/info20541-MiirGuiIconPackBlue.html)
– Shadowed Unit Frames (https://www.wowinterface.com/downloads/info13494-ShadowedUnitFrames.html)
– Flat Player Icons (https://www.wowinterface.com/downloads/info24101-FlatPlayerIcons.html)
– SimpleItemLevel
– DampeningDisplay

Related addons:

Lorti UI AzeriteUI for WoW Retail Avenyx UI LUI Core Masque: Gears AzeriteUI for WoW Classic Masque_Parabole DiabolicUI