Xfce Task Manager

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Linux Process Explorer

Pluto HUD is a highly refined and customizable system monitor for your Mac. It gives you a broad overview of your system activity and allows you to keep track of what's going on behind the scenes without intruding with your current workflow. Pluto HUD provides modules that can be individually disabled, pinned to collapsed mode, reordered and adjusted for detail. Pluto HUD is avalible for macOS 11.0 or later.

An advanced system monitor widget for your macOS menubar. With iStat Menus you can track CPU, GPU, memory, disks, network, sensors, battery, power and weather, from anywhere on your desktop. iStat Menus can also notify you when your public IP has changed, when your CPU has reached a certain threshold or your internet connection is down.

Process Explorer is an advanced process management utility form Windows operating system. Process Explorer picks up where regular Task Managers leaves you haning. With Process Explorer you can get detail information about active process on your system via a GUI or the command-line. The information gathered and displayed can be used for effective troubleshooting of your system and running applications.