Can I install server software?

You are free to use any applications that can be uploaded to the storage space of a hosting account and subsequently accessed through a browser.

That is, you can use any web-based software you wish.

You are not allowed to install any software on the server in the same way you might install software on your home or work computer.

We're not a generic computing service, we're a web hosting service. Any server software you might otherwise install is going to have to compete for server resources (CPU, memory) and ultimately degrade the quality of service that everyone else receives.