atop provides emphasizing on detailed resource tracking and historical logging while htop focuses on ease of interactive and ease of use, providing a visually appealing UI and interactive controls.
Two similar utilities ,atop and htop offer an enhanced set of views and features. most of their extra features add functionality found in other tools.
atop is a full screen performance monitor for viewing system load,it shows the most critical hardware resources such as CPU, memory ,hard disk and network
htop is similar to top but allows you to scroll horizontally and vertically using a pointing device like mouse.
It also can also show all the processes running in the system along with command line arguments and we can view them in tree format as well.