Running some scripts or need to create databases? You can create as many databases as you want, and even manage them with phpMyAdmin, which comes with every cPanel. This leaves all the hard work of figuring out how to set up a database, where to upload figures, and how to configure and install a script. Need WordPress, Joomla, Drupal, a forum, or some other script, then you’re in luck, as cPanel usually includes auto-installer scripts you can launch in a minute or two. This leaves for unlimited possibilities! Auto-Install Handy Web Scripts
Within each individual cPanel account on your reseller you can even add on or park more domains.
With cPanel reseller hosting, you can manage as many domains as your account’s disk space and data resources allow for.