IPulse
Using its concise and appealing user interface, iPulse graphically displays the inner workings of macOS on you desktop, menu bar or Dock.
Alternatives to IPulse
Htop
Free
And here is my lightning talk at FOSDEM presenting the latest and upcoming features:
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Glances
Free
Glances is a cross-platform curses-based system monitoring tool written in Python.
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Activity Monitor
Free
MacOS Mojave brings new features inspired by its most powerful users, but designed for everyone to the Mac.
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Process Explorer
Free
Find out what files, registry keys and other objects processes have open, which DLLs they have loaded, and more.
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Process Hacker
Free
A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware.
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Rainmeter
Free
Rainmeter is software that allows users to customize their Windows desktop. This application makes it possible for individuals to add useful information in the form of widgets. There are also
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IStat Menus
Paid
IStat Menus is an advanced system monitor created to monitor your Mac. The goal of iStat Menus is to create customizable notifications, menu bars, and monitors to suit each individual Mac user's
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