Stats - Simple macOS system monitor in your menu bar.
iStat Menus - "An advanced Mac system monitor for your menubar."
Hugging Face - The Tamagotchi powered by Artificial Intelligence 🤗
MenuMeters for El Capitan - MenuMeters for OS X El Capitan 10.11 (and later)
eul - System & Hardware and OS & Utilities
iPulse - Using its concise and appealing user interface, iPulse graphically displays the inner workings of macOS on you desktop, menu bar or Dock.