Stats - Simple macOS system monitor in your menu bar.
Conky - Latest commit 262a292 on Dec 7, 2017 brndnmtthws Add missing build dep. Conky is a free, light-weight system monitor for X, that displays any kind of information on your desktop.
iStat Menus - "An advanced Mac system monitor for your menubar."
Bginfo - This fully-configurable program automatically generates desktop backgrounds that include important information about the system.
eul - System & Hardware and OS & Utilities
GKrellM - GKrellM is a single process stack of system monitors which supports applying themes to match its...