This domain is only 4-letters long, so it can be very easy for people to remember it.
On the Internet, your domain name is your unique identity. Any individual, business or organization planning to have an Internet presence should invest in a domain name. Having your own domain name, website and email addresses will give you and your business a more professional look.
Best usage for this domain is for advertising a new IT start-up, as the name htop comes for the wide known system-monitor, process-viewer and process-manager.