px app - ps and top for human beings
iStat Menus - "An advanced Mac system monitor for your menubar."
Stats - Simple macOS system monitor in your menu bar.
Windows Task Manager - Need assistance with your Microsoft product? Find helpful articles for Windows, Office, Microsoft Account, Microsoft Store, Xbox, and more.
MenuBar Stats - Advanced Mac system monitor right from the menu bar
IPtraf-ng - iptraf-ng is a fork of original iptraf-3.0.0.