There are a number of applications that cannot operate in the cPanel shared environment, based upon the nature of the server system.
The current list, which is subject to changes and updates, is as follows.
A number of these are either built-in or provided as newer versions, but be aware that you or a web developer may be required to make a number of updates or customizations to get the applications working in the new environment.
If you rely heavily on applications like Darwin Streaming Server, FrontPage, Java, Miva Merchant, or Tomcat, you may be better equipped with full root access in a Cloud Reseller package. That would allow you to install and manage your own custom software.