AntonilzUI

This addon adds a bunch of UI quality of life changes. It also includes custom textures and clean icons specifically for Classic.

Features:

• Classic clean icons (deleted excess icons)
• Dark frames and textures (props to Lorti UI)
• Minimalistic cast bar with timer
• ActionBar tweaks (out of range red indicator, SnowfallKeyPress key down animation).
  /hhk to hide action bar keybins, /hmn to hide macros names
• Error filter (filters out spamming red errors)
• Show various player spell aler (resist, immune, miss)
• Player/Target/ToT frames tweaks (custom in-combat indicators, class colors, player class icon as portrait, etc.)
• Chat tweaks (hide unnecessary stuff, class colored names, URL copy)
• System stats (fps, ping, addon usage) + Gold tracker (left mouse button + ALT to move frames)
• /align to toggle grid overlay, helps in aligning UI elements
• Custom tooltip
• Auto hide raid manager (hover to show), smooth raid frames textures
• Disable death, glow FFX CVars
• Shaman blue color, class colored friendly nameplates
• Minimap, chat scroll with mouse wheel
• AutoDismount (needs testing), AutoSkipCinematics, AutoVendorGrays

To install, unpack the .zip file into your World of Warcraft/_classic_ game folder.
To open Options screen, type /scripts in chat or navigate to Interface->Addons->Scripts section