It has a very affordable licensing plan and it does what my company had tried to develop, but never had the time to do: deploy domain services over multiple servers.
We can define which servers are web (CFMX), web (PHP), e-mail, db, etc., then define hosting packages. When we sign someone up, HSphere configures accounts and access on the differenct servers under a single control panel URL. It's all java, so you can write custom modules as needed.
Customers can configure FTP, e-mail and db, as well as deploy various open source packages from a very simple interface.
It's made us and our customers very happy.