below is an interactive tool to view and record historical system data.
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	The Linux Portal Site
 
			
		
	below is an interactive tool to view and record historical system data.
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	ttop is a system monitoring tool with historical snapshots and alerts. It has a top-like TUI. It’s written in Nim.
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	htop is an interactive and real time process monitoring application similar to the venerable top utility. This application is written in C.
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	bottom is customizable cross-platform graphical process/system monitor for the terminal. The tool is inspired by gtop, gotop, and htop.
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	Conky is an open source system monitor that can display just about anything, either on your root desktop or in its own window.
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	atop is an ASCII full-screen performance monitor, similar to the top command, but atop only shows the active system-resources and processes.
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	gotop is a terminal base graphical activity monitor which seeks inspiration from gtop and vtop.
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	The sysstat utilities are a collection of open source performance monitoring tools for Linux. Utilities include mpstat, iostat, nfsiostat-sysstat.
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	collectl is a lightweight open source performance monitoring tool capable of reporting interactively as well as logging to disk.
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	Saidar is a curses-based free and open source application for viewing the system statistics available through libstatgrab.
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