Top is probably native to most of the Linux distributions.
top
Htop is an upgraded and instrumental version of Top, but may require installation first.
sudo apt install htop htop
btop is another resource monitor that shows usage and stats for processor, memory, disks, network, and processes.
Bashtop, a powerful combination of both with a graphical (even over a terminal interface) that makes the information much easier to see.
git clone https://github.com/aristocratos/bashtop sudo cp bashtop/bashtop /usr/local/bin/ bashtop
Trippy is a network analysis tool that combines the functionality of traceroute and ping with TUI for issue visualization [Link].
sudo apt install trippy -y sudo tripy 1.1.1.1
And finally, Bottom with incredibly integrated mouse features for selecting with a click and zooming with the scrolling wheel [Link].
sudo snap install bottom
OTHERS
sudo apt install glances -y glances
sudo apt install iftop -y sudo iftop -i eth0 -p -n
sudo apt install tcptrack -y sudo tcptrack -i eth0
sudo apt install nload -y nload nload wlan0
sudo apt install speedometer -y speedometer -t eth0 speedometer -r eth0 -c -r lo
sudo apt install mtr-tiny -y mtr 1.1.1.1
sudo apt install ncdu -y ncdu /
sudo apt install duf -y duf
Linux Kernel Manager and Activity Monitor, aka kmon.
sudo apt install kmon -y
See additional information and source code of Glances at [Link].
Another amazing tool for navigating through the file system and executing commands directly is Broot [Link].
BONUS
Check the NetData [Link] open-source WebGUI application and its Free Cloud Service [Link].
Similarly to the monitoring tools above, check the following CLI information acquisition tools for: